John Is a Builder Engaged by Peter to Build His

John is a builder engaged by Peter to build his home.The contract states that payment will be made at the end of each stage of construction.On the day of expected completion, John has almost completed construction but the toilets have not been installed.Which of the following is the least likely consequence of John's breach of contract?

A) John is entitled to 95% of the total fee.
B) John is entitled to payment in full less a small adjustment for the failure to install the toilets.
C) John is not entitled to any payment.
D) John is entitled to payment quantum meruit for the work done.