GMAT Critical Reasoning (CR) | Re: Comcorp Shipping Clerk: Last week, no shipments of building supplies

The following information has been given in the argument :
1. No shipments(containing BS) - sent out on Friday
2. 5 of the shipments sent on Thursday were Specially Ordered(Contained BS)
3. 4 shipments to Traux Constructions (didn't contain BS)
where BS - building supplies

So we can decipher the following things
1. Of the 5 specially ordered shipments, 4 were sent on Thursday.
2. Comcorp had sent at the bare minimum of 5 shipments during that week(that contained BS)
3. The maximum number of
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