【正确答案】 D

【答案解析】[解析] 本题考查推理判断。文章最后一句：“In other words，both buyer and seller should be fully aware of all the factors that comprise the total "package" being exchanged for the asked-for amount of money in group that they may evaluate a given price(换句话说，买卖双方都应该完全意识到形成交易“包”所涉及的各种因素，所以他们能够对这一价格进行评估)”。这样看来，下面很有可能讨论交易“包”所涉及的各种因素。因此选项[D]为正确答案。