Study the following programme
// precondition : x >= 0
public void demo(int x)
{
System.out.print(x %10); 

if( (x /10)! = 0)
{
demo(x / 10);
}
System.out.print(x % 10);
}
Which of the following is printed as a result of the call demo (1234)?

A

1441

B

3443

C

12344321

D

43211234