Choose rows that the first column is larger than the second column

I have an n*2 matrix A. I only want to have rows that the first column is larger than the second column. What is a simple way to do this?

For example, suppose I have

A = [ 2 1;3 4]

I just want to keep the first row.

Answer 1

[Walter Roberson]

A(A(:,1)>A(:,2),:)