Accounts receivable represents the amount customers owe Community Health Systems for services rendered. The balance in the allowance for doubtful accounts is the company's best estimate of the amount that customers will not repay. Community Health Systems' balance sheet and income statements reported the following. Required a. Compute the common-size allowance for doubtful accounts for each year. Compare 2017 to the prior years; what do we observe? What is one conclusion analysts might draw from this analysis? b. On average, the firms in the S\&P 500 report common-size allowance for doubtful accounts between 3% and 5\%. Why might Community Health Systems' ratio be so much higher? How could an analyst verify this inference? c. Compute the common-size bad debt expense for each year. Interpret the ratio for 2017 . What trend do we observe? d. If the company had recorded bad debt expense of $2,554 in 2017 (which is $500 less than actually recorded), which of the following would be true? (Ignore taxes for this question.) 1. The company would have reported operating loss of $1,378 and cash flow would have been $500 higher. 2. The company would have reported operating loss of $2,378 and cash flow would have been $500 higher. 3. The company would have reported operating loss of $1,378 and cash flow would have been unchanged