please answer with explanations A, B, & C

Compute the net sales for each year. The following information was taken from the financial statements of Bramble Company: Compute operating expenses in dollars and as a percentage of net sales for each year. (Income taxes are not operating expenses). (Round all percentages to 1 decimal place, es. 52.7\%) Compute the cost of goods sold in dollars and as a percentage of net sales for each year. (Round percentages to 1 decimal place, eg. 52.7% )