What will the SWAP macro in the following program be expanded to on preprocessing? will the code compile? #include<stdio.h> #define SWAP(a, b, c)(c t; t=a, a=b, b=t) int main() { int x=10, y=20; SWAP(x, y, int); printf("%d %d n", x, y); return 0; }

• A. It compiles
• B. Compiles with an warning
• C. Not compile
• D. Compiles and print nothing