Given the Categorical Proposition "Some Mathematicians Are Not Topologists

Multiple Choice

Given the categorical proposition "Some mathematicians are not topologists." If the quantity but not the quality is changed, the resulting proposition is:

A) Some non-mathematicians are topologists.
B) Some mathematicians are topologists.
C) No mathematicians are topologists.
D) Some mathematicians are non-topologists.
E) All mathematicians are topologists.