Please answer all the questions. I will leave a thumbs up right away!!!

Question 4 (1 point) Which of the following is an example of an accounting policy that two companies might apply differently, thus making comparisons between the two more difficult? O a) FIFO versus weighted average inventory costing. Ob) The application of a single percentage to receivables to estimate the required allowance for doubtful accounts, versus the use of the aging method c) Diminishing-balance versus straight-line depreciation. Od) All of the choices are correct. Question 5 (1 point) Which of the following is the best way to measure a company's operating success for a period of time? a) leverage ratios Ob) profitability ratios Oc) solvency ratios d) liquidity ratios