MY SISTER DIDN'T LEAVE THE CAR KEY, SO I COULDN'T PICK HER UP AT THE AIRPORT

69. - DE THI THU NXB BO GD CO DAP AN
DE THI THU NXB BO GD CO DAP AN
69. My sister didn't leave the car key, so I couldn't pick her up at the airport.A. If my sister left the car key, I would pick her up at the airport.B. If my sister had left the car key, I would have picked her up at the airport.C. If my sister have left the car key, I would have picked her up at the airport.D. If my sister had left the car key, I could pick her up at the airport.