Whic is correct? int *p1; int *p2; p1= new int; p2= new int; *p1=0; p2=0; p2=p1; *p2=1; *p1=3; p1=0; (A)*p1 is 0 and *p2 is 1 (B)*p1 is 3 and *p2 is 1 (C)*p1 is unknown and *p2 is 3 (D)*p1 is 0 and *p2 is unknown (E)None of the above Ans C 想询问这类题目要怎么作答