GMAT一道CR题Although parapsychology is often considered a pseud

GMAT一道CR题
Although parapsychology is often considered a pseudoscience,it is in fact a genuine scientific enterprise,for it uses scientific methods such as controlled experiments and statistical tests of clearly stated hypotheses to examine the questions it raises.
The conclusion above is properly drawn if which of the following is assumed?
(A) If a field of study can conclusively answer the questions it raises,then it is a genuine science.
(B) Since parapsychology uses scientific methods,it will produce credible results.
(C) Any enterprise that does not use controlled experiments and statistical tests is not genuine science.
(D) Any field of study that employs scientific methods is a genuine scientific enterprise.
(E) Since parapsychology raises clearly statable questions,they can be tested in controlled experiments.
C,D选项不知该选哪一个,
OA是D,大家都讲了D为什么对,能不能说下C为什么错