Control Instructions - Programming

Q1:

Point out the error, if any in the program.
#include<stdio.h>
int main()
{
    int i = 1;
    switch(i)
    {
        case 1:
           printf('Case1');
           break;
        case 1*2+4:
           printf('Case2');
           break;
    }
return 0;
}

A
Error: in case 1*2+4 statement

B Error: No default specified

C
Error: in switch statement

D No Error

ANS:A -

Error: in case 1*2+4 statement

Constant expression are accepted in switch It prints 'Case1'