Which of the following is a complete, legal C program?

		B. #include main() { int 4score = 0; printf(Hello, world ); }
		D. #include init() { printf(Hello, world ); }
		C. #define PI main() { printf(Hello, world ); }
		A. #include #include #define HALF 0.5 main() { printf(Hello, world ); }