Q. When 1 is entered, the output of the code below is?

#include <stdio.h>

void main() 
{        int ch;        
printf(“enter a value btw 1 to 2:”); 
       scanf(“%d”, &ch);    
    switch (ch, ch + 1)   
     {          
     case 1:             
         printf(“1\n”);         
             break;          
     case 2:              
        printf(“2”);           
           break;     
   }
 }

• (A) 1
• (B) 2
• (C) 3
• (D) Run time error