What is the output of the following C program?

#include<stdio.h> #define SQR(x) (x*x) int main() { int a; int b=4; a=SQR(b+2); printf("%d\n",a); return 0; }

(A) 14
(B) 36
(C) 18
(D) 20

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  (B) 5 and 12
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