AMC8 1987 Problem 20

Past Contests AMC8 AMC 8 - 1987
1

If a whole number \mathrm{n} is not prime, then the whole number \mathrm{n}-2 is not prime." A value of \mathrm{n} which shows this statement to be false is

Answer Choices
A. 9
B. 12
C. 13
D. 16
E. 23