I was playing a live 120€ mtt, there were 32 players ramaining and 24 were paid. I got A5o in the BB. I had around 12BB's and the chip stack was playing pretty aggro. He or x2.2 in the Hj and I wasn't sure what was the best play. Finally, I called and the flop came 246 rainbow, I check and he cbets around 40% of the pot. Would u prefer just shoving preflop? What 3bet Range I should have in this spot? And what would u do in the flop as played?

Many thanks.