Wilhelm Company's gross profit percentages for the past 3 years are:

Year	Gross Profit Percentages
2020	2828%
2019	23.423.4%
2018	21.321.3%

Based on the above data, what can be said about the Wilhelm Company?

A.

The company is controlling operating expenses.

B.

The sales volume is decreasing.

C.

The company is decreasing the income tax expense.

D.

The company is controlling cost of goods sold.