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 itinerary