Ali agreed to buy Ben's car provided Ben made certain modifications to the car's engine. Ben agreed and Ali gave Ben a deposit of 10 per cent of the price. Ben made the modifications but, before he could inform Ali, the car was destroyed in a fire at Ben's garage. Ben, who was uninsured, is demanding that Ali pay the agreed price for the car. Ali refuses . He is demanding the return of his deposit and is threatening to sue Ben for non-delivery of the vehicle.Advise Ali of his rights under the Sale of Goods Act 1957.