Shipping Clerk: The five specially ordered shipments sent out last week were sent out on Thursday. Last week, all of the shipments that were sent out on Friday consisted entirely of building supplies, and the shipping department then closed for the weekend. Four shipments were sent to Truax Construction last week, only three of which consisted of building supplies.
If the shipping clerk's statements are true, which of the following must also be true?
At least one of the shipments sent to Truax Construction last week was specially ordered.
At least one of last week's specially ordered shipments did not consist of building supplies.
At least one of the shipments sent to Truax Construction was not sent out on Thursday of last week.
At least one of the shipments that were sent out on Friday of last week was sent to Truax Construction.
At least one of the shipments sent to Truax Construction last week was sent out before Friday.
题目说了星期四送了什么,星期五送了什么,但没说一周里其他天是关了的啊。所以做保真推理,B是推理不出来的;E是写的很好的选项,写was sent out before Friday, 但没说哪一天
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