Please answer the questions below in details considering APPLE INC 2021 financial statements. This is very important for me, so please help me out with it. Thank you.

oa. Do you suggest any change on the capital structure? You can use the following perspectives to answer the question. 1) Capability of debt payment i. Rating II. Interest coverage ratio iii. Volatility of interest coverage ratio (2) Tangibility i. What are the tangible assets? Are they easy to be liquidated? (3) Future needs i. Do you think the firm needs more financing for future investment? ii. How well can this firm forecast its future investment opportunities? iii. How important is it for the firm to maintain financing flexibility? ob. Conclude from the theoretical perspective regarding the advantage or disadvantage of debt versus equity for your selected firm