NO.PZ2018062003000202
问题如下：
Which of the following counterparties is most likely to be considered a buy-side foreign-exchange market participant?
选项：
A.A large trading bank.
B.A multinational bank that trades foreign exchange with its diverse client base.
C.Real money accounts
解释：
C is correct.
Real money accounts is most likely to be considered a buy-side foreign-exchange market participant.
考点：Participants in The Foreign Markets
解析：A large trading banks 以及A multinational bank that trades foreign exchange通常是外汇市场上的卖家，而Real money accounts 在外汇市场上通常扮演买家的角色。
请翻译一下题目和选项，另外为什么A和B是卖方市场
