例如这段，开始的The first group 用的是过去时的单数was，然后后面的两个，The second group 和 The third group用的却是现在时的复数。是不是不太对？到底哪个对？

The first group was those who are risk-averse. If you are ….
The second group are those who are risk-tolerant. If you are ….
The third group he mentioned are those who are risk-seeking.