Array - 7

Which of the following are valid array declarations/definitions?
    1:  int iArray1[10];
    2:  int iArray2[];
    3:  int iArray3[]   = new int[10];
    4:  int iArray4[10] = new int[10];
    5:  int []iArray5   = new int[10];
    6:  int iArray6[]   = new int[];
    7:  int iArray7[]   = null;
A) 1.
B) 2.
C) 3.
D) 4.
E) 5.
F) 6.
G) 7.

Ans:-