Quincy is working hard on the mayoral campaign of Rio and believes that just a few more votes could win the election, so promises to pay a friend Varun $$50$ to register and vote. Varun does so$,$ but Rio loses the election, and Quincy now refuses to pay. The agreement is:

a$.$ unenforceable and opposed to public policy.

b$.$ one to obstruct the administration of justice.

c$.$ enforceable.

d$.$ an unconscionable contract covered by the UCC.