AA vs unknown facing donk pot river

Posted 8 years, 11 months ago

Blinds: $0.10/$0.25 (5 Players) SB: $25.60
BB: $36.72
UTG: $24.62
CO: $28.80
BN: $25.81 (Hero)

Preflop ($0.35) Hero is BN with A A

UTG raises to $0.50, CO folds, Hero raises to $1.75, SB calls $1.65, BB folds, UTG calls $1.25

Flop ($5.50) 7 4 K

SB bets $2.75, UTG folds, Hero calls $2.75

Turn ($11.00) 7 4 K T

SB checks, Hero checks

River ($11.00) 7 4 K T 3

SB bets $10.50, Hero folds

villain is unknown 7th hand in his session

can i call river?

is my line okay or i should maybe raise flop or bet turn???