I was at a underground game last night, and a situation occured in a 1-2NL game, and I just wanted to get some clarification.

After the flop Stacks ~apprx

Player A - 60
Player B - 100
Player C - 150

Player A goes all in.
Player B wants to go all in, but is prevented from the dealer.
Rationale, is that if he goes all in, it's a short raise, so he can only call the Player A's 60.

Player C then proceedes to go all-in.

Thoughts?