In Which of the Following Ways Do Advertising and Other

Multiple Choice

In which of the following ways do advertising and other selling costs affect a firm's cost curves? i. Advertising expenditures increase total fixed costs.
Ii) Selling costs increase total fixed costs.
Iii) Advertising and other selling costs per unit of output decrease as output increases.

A) i and ii
B) iii only
C) i, ii and iii
D) i only
E) i and iii