Which of the following is not an valid declaration of an array?

[A] int [ ] a = new int [3];

[B] int a [ ] [ ] = new int [3] [3]

[C] int [ ] [ ] a = new int [3] [ ];

[D] int [ ] [ ] a = new int [ ] [3];

Answer & Explanation
Option: [D]

In multidimensional array rows cannot left blank.