What Are Possible Justifications for the Doctrine of Anticipatory Breach

What are possible justifications for the doctrine of anticipatory breach? Please select all that apply.

A) There is an implied promise to maintain the contractual obligation intact from the making of the contract until it is performed.
B) There is an objectively reasonable inference that the contractual obligation will not be properly performed when due.
C) The innocent party always has a right to terminate the contract and sue for damages.
D) It is justified wholly on pragmatic grounds.