In Which of the Following Scenarios Has an Offer Been

Multiple Choice

In which of the following scenarios has an offer been validly accepted?

A) While driving around town, Nathan sees his neighbour's dog and brings it back home to him. His neighbour was offering a £50 reward for anyone who finds the dog, but Nathan was unaware of this.
B) Quagmire Industries is looking for a new corporate headquarters. After months of negotiations, Relex Realtors faxes them a final offer '£37 million, reply by midnight'. Quagmire faxes an acceptance at 11.55pm, but the ink has run out on Relex's fax. The fax can only be printed out the following morning when the toner is replaced.
C) The Port Authority of South East England invites tenders to provide towage facilities for the port of Ramsgate. The invitation states: 'All tenders must be sent by Friday before 12.00pm by registered mail'. Towex sends a tender on Friday at 11.00am by regular mail.
D) All of the options given are correct.