2. Use the same exhibits for problem P4-29 (pages 4-43 through 4-45) to complete this problem. In addition to the exhibits, information in the financial statements and footnotes also reveal that amortization for 2016 was $468 million, depreciation expense for 2016 was $747 million, and noncurrent deferred tax liabilities for 2016 were S1.142 million a) Compute the following Moody's metrics for Lockheed Martin for 2016 only 1) EBITA to average assets 2) Operating margin 3) EBITA margin 4) EBITA interest coverage 5) Debt to EBITA 6) Debt to book capitalization 7) Retained cash flow to net debt d) Use the Moody metrics calculated above, along with the measures in exhibit 4.7 (page 4-29), to estimate a credit rating for Lockheed Martin