Which of the structure is incorrcet? 1 : struct aa { int a; float b; }; 2 : struct aa { int a; float b; struct aa var; }; 3 : struct aa { int a; float b; struct aa *var; };

Which of the structure is incorrcet? 1 : struct aa { int a;

1.	Which of the structure is incorrcet? 1 : struct aa { int a; float b; }; 2 : struct aa { int a; float b; struct aa var; }; 3 : struct aa { int a; float b; struct aa *var; };
A.	1
B.	2
C.	3
D.	1, 2, 3
Answer» C. 3