During the current year, the net sales of Ridgeway, Inc., were 10 percent below last year's level. You should expect Ridgeway's semivariable costs to:

a. Decrease in total, but increase as a percentage of net sales.

b. Increase in total and increase as a percentage of net sales.

c. Decrease in total and decrease as a percentage of net sales.

d. Increase in total, but decrease as a percentage of net sales,