Refer to Fact Pattern 8-1

Multiple Choice

Refer to Fact Pattern 8-1. If Teatro says it is asking for the extra $250,000 because it has encountered extraordinary unforeseen difficulties that will add considerable cost to the project, the agreement is​

A) enforceable as the consideration is past.
B) enforceable because of unforeseen difficulties.
C) unenforceable as an illusory promise.
D) unenforceable due to the preexisting duty rule.