5. Bob entered into a written contract to purchase a secondhand iPhone from a mobile phone shop that the shopkeeper describes as an iPhone 12. Bob paid $750 for this. After Bob brought it home, he realized it was, in fact, an iPhone 10, and therefore, that should have only cost $500 secondhand. The written contract is a simple one that simply states iPhone on it with no reference to the model. What remedies are open to Bob? (10 marks)