Assuming everything else constant, which of the following will NOT make net profit margins

increase?

Decrease Research & Development expenses.

Increase in Research & Development expenses.

Decrease costs of goods sold.

Decrease in Selling, General, and Administrative expenses.Assuming everything else constant, which of the following will NOT make net profit margins

increase?

Decrease Research & Development expenses.

Increase in Research & Development expenses.

Decrease costs of goods sold.

Decrease in Selling, General, and Administrative expenses.Assuming everything else constant, which of the following will NOT make net profit margins

increase?

Decrease Research & Development expenses.

Increase in Research & Development expenses.

Decrease costs of goods sold.

Decrease in Selling, General, and Administrative expenses.