对于句子“航空公司在最后一刻取消了航班，旅行团被迫改变行程。”的四个英语译文，最佳翻译是

A.As the airline cancelled the flight at the last minute,the travel group have to change its itinerary.

B.The airline cancelled the flight at the last minute,so the travel group have to change its itinerary.

C.The airline cancelled the flight at the last minute ,which compelled the travel group to change its itinerary.

D.The last-minute cancellation of the flight by the airline compelled the travel group to change its itin