Brad Defends Against a Breach-Of-Contract Suit by College Credit Corporation

Brad defends against a breach-of-contract suit by College Credit Corporation by claiming that their deal-a student loan accruing interest at a certain rate and payable beginning on a certain date-was unfair because the consideration for their contract was inadequate.
-Refer to Fact Pattern 12-2."Adequacy" of consideration refers to

A) "how much" consideration is given.
B) legally sufficient value in the eyes of the law.
C) the intangible value to a contracting party of a thing exchanged.
D) the substantiality of the consideration exchanged.