Where a contract has been substantantially, but not completely performed, the innocent party:

A.is required to pay the full contractual amount.

B.may refuse to pay any money owed until full completion has taken place.

C.is required to pay the amount due, taking into account the shortcomings of the contract and deducting an amount accordingly.

D.must pay 50% of the contractual fee and nothing more, regardless of the amount of work completed