Pharmaceutical Firms Market Many Brands of Cold Remedies with Highly

Pharmaceutical firms market many brands of cold remedies with highly similar ingredients.The primary difference among the brands is their promotions that emphasize that various brands will treat different symptoms,such as runny noses,headaches,and fever.This strategy is best classified as which of the following?

A) concentrated segmenting.
B) segment differentiation.
C) multisegment targeting.
D) multiple-use product marketing.