How to remove zero sum row from matrix

A=[1 2 3 4 5 6;
   0 0 1 1 0 1;
   0 0 1 0 1 0]

Sum of second and third row if equal to zero, then in new matrix that column is to be excluded. So, the result shall be

A=[3 4 5 6;
   1 1 0 1;
   1 0 1 0]

Answer 1

[the cyclist]

colToRemove = sum(A(2:end,:))==0;
A(:,colToRemove) = [];

[the cyclist]

Edited my answer so that it will sum all rows except the first one.

Answer 2

[Roger Stafford]

   A = A(:,(A(2,:)+A(3,:)~=0));

[Vishal Sharma]

Thanks Roger Stafford,,, if there are n rows, please also suggest answer...

Answer 3

[Andrei Bobrov]

A = A(:,sum(A(2:end,:))~=0);