Why Was the Plaintiff Builder Successful in the Case of Pavey

Multiple Choice

Why was the plaintiff builder successful in the case of Pavey & Matthews Pty Ltd v Paul (1987) 162 CLR 221?

A) The work was completed with proper skill and on time.
B) The defendant had repudiated the contract.
C) The defendant had received a benefit from the builder's performance of the contract.
D) The contract was entire and not divisible.