Q. Which of the following is the correct output for the following JavaScript code

var grade='C';  
var result;  
switch(grade)  
{  
case'A':  
{  
        result+="10";  
break;  
}  
case'B':  
{  
        result+=" 9";  
break;  
}  
case'C':  
{  
        result+=" 8";  
break;  
}  
default:  
    result+=" 0";  
}  
document.write(result);  

• (A) 10
• (B) 9
• (C) 8
• (D) 0