Villain is 55/24/2.54
A few hands ago he raised T9o from UTG and called a 3-bet OOP.

a) Bet - Fold?
b) Check - Call?
c) Check - Fold?
d) Bet - Call?

Which order?

$0.25/$0.5 Pot Limit Holdem
6 players
Converted at

Stacks:
UTG ($59.10)
UTG+1 ($103.25)
CO ($131.10)
BTN ($23.60)
Hero ($146.65)
BB ($100.50)

Pre-flop: ($0.75, 6 players) Hero is SB [Jh]
2 folds, CO raises to $1.75, 1 fold, Hero raises to $5.75, 1 fold, CO calls $4

Flop: [2c][6s] ($12, 2 players)
Hero checks, CO checks

Turn: ($12, 2 players)
Hero bets $9, CO calls $9

River: ($30, 2 players)
Hero ???

What u did was fine.