Raj defends against a breach-of-contract suit by Student Loan Corporation by claiming that their deala student loanwas unfair because the consideration for the contract was inadequate. With respect to Raj's defense, the court will most likely rule in favor of the lender on the ground that

a. Raj promised to do something that he had no prior legal duty to do.

b. Raj performed an act that he was not otherwise obligated to undertake.

c. Raj refrained from an act that he had a legal right to undertake.

d. the adequacy of the consideration is not for the court to determine.