Your Local Hallmark Retailer Carries Thousands of Greeting Cards

Your local Hallmark retailer carries thousands of greeting cards.You can find cards for a twin birthday, for name day, from my cat to yours and many other unique titles.This is an example of the __________ your Hallmark retailer carries.

A) depth of product line
B) breadth of product line
C) variety of product line
D) versatility of product line
E) product mix