Point out the error (if any) in the following C code?

#include<stdio.h>
enum hello
{
    a,b,c;
};
main()
{
    enum hello m;
    printf("%d",m);
}

A. Declare a variable B. Declare a function C. Define a function D. Assign a value

A. . B. ; C. : D. ,

A. char B. int C. float D. double

A. int variable_name; B. variable_name = 5; C. variable_name int; D. int = variable_name;