Problem
1987 AJHSME Problem 20
"If a whole number n is not prime, then the whole number n-2 is not prime." A value of n which shows this statement to be false is
\text{(A)}\ 9 \qquad \text{(B)}\ 12 \qquad \text{(C)}\ 13 \qquad \text{(D)}\ 16 \qquad \text{(E)}\ 23
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