Which of the following is not an infinite loop ?
   a.while(1){
     ....
     }
   b.for(;;){
     ...
     }
   c.x=0;
     do{
     /*x unaltered within theloop*/
     ...
     }while(x==0);
   d.# define TRUE 0
     ...
     while(TRUE){
     ....
     }