What will be the output of the following C code?

#include <stdio.h>
void main()
{
    int k = 0;
    double b = k++ + ++k + k--;
    printf("%d", k);
}

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;