All of the Following Are Examples of Product Differentiation Except

Multiple Choice

All of the following are examples of product differentiation except one.Which is the exception?

A) developing a new video game or a computer program called "How to Teach Your New Dog Old Tricks"
B) manufacturing a car that minimizes outside noise relative to other cars
C) lowering the price of a good in a special sale
D) providing movies and special meals on airline flights
E) making sodium-free, caffeine-free colas