Hello can you help me with the following question? I assume it's regarding contract formation and my case to use is either Carlill v Carbolic Smoke Ball Company [1893] 1 QB 256 OR Adams Vs lindsell. Are you able to assist me with the below question?

a.Carbord Ltd (C) is a building materials wholesaler. On Monday morning C received a letter containing an order from a regular customer, Home Interiors Ltd (HI), ordering a certain number of gyprock sheets, with measurements, to be delivered to an address in Sydney the following Monday. C immediately posted its confirmation that the order was accepted. This letter would have ordinarily taken 2 days to reach HI's place of business but, due to a strike affecting Australia Post, the letter was not delivered until Friday afternoon. On Friday morning, having not heard from C, HI, believing C were not able to supply the materials, ordered the same materials from an alternative wholesaler. HI sent a fax on Friday afternoon, before the mail was delivered, to C cancelling the order.

HI is now refusing to accept the gyprock sheets from C, or pay for them. Advise Carbord Ltd. (6 marks)