If the fixed expenses of a product increase while variable expenses and the selling price remain constant, what will happen to the total contribution margin and the break$-$even point?

Contribution margin

Break$-$even point

A$)$

Increase

Decrease

B$)$

Decrease

Increase

C$)$

No change

No change

D$)$

No change

Increase

a$.$

Option A

b$.$

Option B

c$.$

Option C

d$.$

Option D