Ohhh.... The Wells Fargo Trains A'Comin...

Mom, can I be in band at school? I wanna play trumpet or drums- no, clarinet... no. I mean... what's easy?
If you, as a parent don't want A to turn into B, help your child arrive at a decision that makes sense. If he/she is small in stature, encourage an instrument that is physically compatible; but, let the sound it makes be the main influence. Go to the library and borrow CDs that the band director may recommend to help the student identify the various instruments available.

Let them determine by sound just which one appeals to them.