Which One of the Following Is Not a Reason Why

Multiple Choice

Which one of the following is not a reason why one might use a sign test to make a comparison between two populations?

A) Some studies yield responses which are difficult to quantify.
B) It is easy to use the sign-testing procedure.
C) The data in question consist of count data.
D) No assumptions need to be made about the form of the population probability distributions.
E) Some studies yield responses which are difficult to quantify and the data in question consist of count data.