In which of the following cases might specific performance constitute an appropriate remedy?

Multiple Choice

• An Apple Store refuses to deliver an iPhone to a purchaser who has paid for it.
• Someone contracts to sell a farm and then tries to back out of the deal.
• A slip-and-fall case at a Walmart.
• A computer purchaser informs the store, after agreeing to buy a computer, that she is no longer interested.
• A teacher refuses to do work scheduled under her contract.