A Sunglass Manufacturer Spends a Lot of Money to Promote

A sunglass manufacturer spends a lot of money to promote its brand name.This promotion ________ consumers because ________.

A) helps; it lowers marginal cost
B) harms; definitely increases average total cost
C) helps; it provides a signal and information about the sunglasses
D) harms; increases the elasticity of demand
E) helps; it is a fixed cost and not a variable cost