How can I resize the matrix?

Hello, Let's say I have the matrix as below:

A= [0 0 0 0 0;0 0 0 0 0;2 3 9 1 7;4 5 6 5 4;0 0 0 0 0] (It can be in different size too)

I want have:

B=[2 3 9 1 7; 4 5 6 5 4] out of A

How can I do that? Thx

Answer 1

[Thorsten]

 B = A(sum(A') ~= 0, :)