50/100 hand. Comment please

[Nikla]

Semigood 10-handed 50/100 online. No read on player A in CO-2, Hero is CO-1, player B in CO is very passive.

----- HOLE CARDS -----
dealt to Hero [Ah As]
donk1: folds
donk2: folds
donk3: folds
Player A: raises $100
Hero: raises $150
Player B: calls $150
donk4: folds
donk5: folds
donk6: folds
Player A: calls $50

----- FLOP ----- [4s 7d 9d]

Player A: checks
Hero: bets $50
Player B: calls $50
Player A: raises $100
Hero: raises $100
Player B: calls $100
Player A: calls $50

----- TURN ----- [4s 7d 9d][Js]

Player A: checks
Hero: bets $100
Player B: calls $100
Player A: raises $200
Hero: calls $100
Player B: calls $100

----- RIVER ----- [4s 7d 9d Js][Qd]

Player A: bets $100
Hero: folds

Comments?