Alka-Seltzer Was Made Originally as a Hangover Remedy That Cured

Alka-Seltzer was made originally as a hangover remedy that cured the headache and settled the stomach.Today you can buy Original Alka-Seltzer,Extra Strength Alka-Seltzer,Alka-Seltzer Morning Relief (for morning headaches and fatigue) ,and Alka-Seltzer Heartburn Relief.Each Alka-Seltzer product has a different formulation to relieve a specific malady for a specific targeted market segment.The maker of Alka-Seltzer is using

A) product segmentation
B) market sectioning.
C) product differentiation.
D) product segmentation..
E) product base development.