Selected financial data for Wilmington Corporation is presented below. \begin{tabular}{|l|r|r|} \hline Cash and cash equivalents & $519,159 & $274,579 \\ \hline Marketable securities & 166,106 & 187,064 \\ \hline Accounts receivable (net) & 232,548 & 260,190 \\ \hline Inventories & 382,044 & 352,022 \\ \hline Prepaid expenses & 49,832 & 22,958 \\ \hline Other current assets & 83,053 & 85,029 \\ \hline Total Current Assets & 1,432,742 & 1,181,842 \\ \hline Property, plant and equipment & 1,384,217 & 625,421 \\ \hline Long-term investment & 568,003 & 425,000 \\ \hline Total Assets & $3,384,962 & $2,232,263 \\ \hline Current Liabilities & & \\ \hline Short-term borrowings & $306,376 & $170,419 \\ \hline Current portion of long-term debt & 155,000 & 168,000 \\ \hline Accounts payable & 228,700 & 257,631 \\ \hline Accrued liabilities & 246,292 & 150,285 \\ \hline Income taxes payable & 87,962 & 161,020 \\ \hline Total Current Liabilities & 1,024,330 & 907,355 \\ \hline Long-term debt & 500,000 & 300,000 \\ \hline Deferred income taxes & 193,515 & 236,164 \\ \hline Total Liabilities & 1,717,845 & 1,443,519 \\ \hline Common stock & $425,250 & $125,000 \\ \hline Additional paid-in capital & 356,450 & 344,335 \\ \hline Retained earnings & 885,417 & 319,409 \\ \hline Total Stockholders' Equity & 1,667,117 & 788,744 \\ \hline Total Liabilities and Stockholders' Equity & $3,384,962 & $2,232,268 \\ \hline \hline \end{tabular} Select one: a. 34.4% b. 16.7% c. 20.2% d. 59.4% Wilmington Corporation's quick ratio changed by what percentage from Year 6 to Year 7 ? Select one: a. +12.5% b. +11.1% C. +88.9% d. +7.7%