The blizzard conditions worst affected those travelers hoping toA．take railways to France

The blizzard conditions worst affected those travelers hoping to

A．take railways to France and Belgium.

B．take the Channel Tunnel rail service to the USA and Belgium.

C．fly to France and Belgium.

D．take the Channel Tunnel rail service to France and Belgium.

请帮忙给出正确答案和分析，谢谢！