A. y=x+1;if(x>=0)if(x==0)y=x;elsey=x-1; B. y=x-1;if(x!=0)if(x>0)y=x+1;elsey=x; C. if(x<=0)if(x<0)y=x-1;elsey=x;elsey=x+1 D. y=x;if(x<=0)if(x<0)y=x-1;elsey=x+1;
A. 3 B. 4 C. 5 D. 6