Aedifico is hired by Rose to build two fences, one at the back and the other at the front of her house. After finishing the front fence only he has an argument with Rose about his work and refuses to finish the job. If Rose sues him for breach of contract Aedifico could claim a right to be paid for the completed front fence under the rule of

a.

indemnity

b.

rectification

c.

restitution

d.

quantum meruit