Balance sheets and income statements for 3M Company follow. \begin{tabular}{|l|r|r|} \hline \multicolumn{1}{|c}{3MCOMPANYConsolidatedBalanceSheetsAtDecember31($millions,exceptpershareamount)} & \multicolumn{2}{c|}{} \\ \hline Current Assets & & \\ \hline Cash and cash equivalents & 2017 \\ \hline Marketable securities & $1,290 & $1,380 \\ \hline Accounts receivable & 380 & 1,076 \\ \hline Total inventories & 2,269 & 2,220 \\ \hline Prepaids & 1,973 & 1,823 \\ \hline Other current assets & 741 & 937 \\ \hline Total current assets & 349 & 266 \\ \hline Property, plant and equipment-net & 7,002 & 7,702 \\ \hline Goodwill & 3,950 & 4,007 \\ \hline Intangible assets-net & 4,543 & 4,752 \\ \hline Other assets & 1,201 & 1,327 \\ \hline Total assets & 1,345 & 1,395 \\ \hline Current liabilities & $18,041 & $19,183 \\ \hline Short-term borrowings and current portion of long-term debt & $547 & $838 \\ \hline Accounts payable & 1,024 & 879 \\ \hline Accrued payroll & 749 & 870 \\ \hline Accrued income taxes & 243 & 310 \\ \hline Other current liabilities & 1,254 & 1,224 \\ \hline Total current liabilities & 3,817 & 4,121 \\ \hline Long-term debt & 6,062 & 5,467 \\ \hline Pension and postretirement benefits & 1,636 \\ \hline Other liabilities & 14,239 & 14,186 \\ \hline Total liabilities & & \\ \hline \end{tabular} \begin{tabular}{|l|r|r|} \hline 3M Company shareholders' equity & & \\ \hline \multicolumn{1}{|c|}{ Common stock, par value } & 9 & 9 \\ \hline Additional paid-in capital & 1,868 & 2,126 \\ \hline Retained earnings & 18,367 & 17,680 \\ \hline Treasury stock & (13,391) & (11,701) \\ \hline Accumulated other comprehensive income (loss) & (3,103) & (3,176) \\ \hline Total 3M Company shareholders' equity & 3,750 & 4,938 \\ \hline Noncontrolling interest & 52 & 59 \\ \hline Total equity & 3,802 & 4,997 \\ \hline Total liabilities and equity & $18,041 & $19,183 \\ \hline Combined federal and state statutory tax rate & 22% & \\ \hline \end{tabular} b. Compute net operating assets (NOA) for 2018 and 2017. c. Compute and disaggregate 3M's RNOA into net operating profit margin (NOPM) and net operating asset turnover (NOAT) for 2018 . Demonstrate that RNOA = NOPM NOAT. *** RNOA may be different from first RNOA calculation due to rounding d. Compute net nonoperating obligations (NNO) for 2018 and 2017. Confirm the relation: NOA = NNO + Total equity e. Compute return on equity (ROE) for 2018. f. What is the nonoperating return component of ROE for 2018