UTG bets 12bb

Multi-way River | 3-way: CO | 100bb effective | Difficulty: Standard

Players in hand: UTG, Hero (CO), BB

Hero hand

A♥Q♣

Board

Q♦7♥2♣5♠3♦

Action so far:
River 3♦ on Q♦7♥2♣5♠3♦, pot 20bb
UTG bets 12bb

Pot: 20bb   To call: 12bb

Villain range: UTG three-barrel: AQ, KQ, QJ, AA, KK, sets, missed AcKc/AcJc bluffs

Your move: