Select the Question That Can Best Be Answered Through Experimentation

Select the question that can best be answered through experimentation.

A) Do undergraduate students drink more carbonated beverages than graduate students?
B) Will Chevron gasoline with Techron provide better mileage than Chevron gasoline without Techron?
C) Does the average male use more toothpaste than a female?
D) Is the standard of living higher in the US than Japan?
E) All of the above can be answered through experimentation.