In the Following Statement Which Claim Is Probably Correct, Given

In the following statement which claim is probably correct, given each claim was established using rating scales completed by consumers? "New improved Killo disinfectant now has a 50% fresher odor, is 15% less irritating, is 25% easier to use, and in a selected sample was stated as being more effective by 50% of the subjects."

A) 50% of the subjects felt it to be more effective
B) 50% fresher odor
C) 25% easier to use
D) 15% less irritating
E) they are all correct if the claims are based on consumer perceptions