In the USA, Columbus Day is the of Christopher Columbus in the New World.A. in the memory

In the USA, Columbus Day is the of Christopher Columbus in the New World.
A. in the memory of; arrival
B. in memory of; arrival
C. in the memory of; arriving
D. in memory of; arriving

A. in the memory of; arrival(答案→)B. in memory of; arrivalC. in the memory of; arrivingD. in memory of; arriving解析：第一空考查词组in memory of“为了纪念”，第二空要填arrive的名词arrival，所以选B。句意是：在美国，哥伦比亚日是纪念克里斯多夫哥伦比亚来到新世界。

就是这个解释