last years mot mentioned slight horizontal play in the nearside wheel, tester said that he couldn't feel anything on the offside. He didn't narrow it down anymore than poss steering rack.
Am i right in saying that it could be any one of three things?

1 track rod end
2 Inner track rod
3 steering rack

There are a number of posts on here regarding chaning the inner track rods, can i gather these are a common fault? Do steering racks go often?
How do i tell what has gone?

cheers all