A plumber went on an emergency call to a doctor office on a late friday afternoon as the work could not be completed during business hours. When the plumber arrived, he found a notice on the door from the doctor saying he had a trip booked and forgot to tell the plumber. The plumber was called by the doctor the following week to arrange another appointment with the plumber for the next weekend. The plumber told the doctor he was already booked that weekend and would be difficult to find time on future weekend as he typically did not work weekends.

1) the plumber breached the contract on the second weekend

2) neither man has breached the contract, it is simply suspended

3) the doctor breached the contract on the first friday and the plumber breached the contract on second weekend

4) the doctor breached the contract on the Friday

5) the contract was not breached since it was frustrated on the first Friday because the doctor was not able go be there