句子分析:Cars and bicycles are similar ___ they are both privately owned means of transport.四选

问题描述:

句子分析:Cars and bicycles are similar ___ they are both privately owned means of transport.四选
A)so that B)in which C) in that D):for which
为什么不是B呢.
求高手分析,并翻一下这句话的意思.

in that 固定词组,“因为”的意思.
骑车和自行车类似因为它们都是私有的交通工具.