Freida is at a Kansas City Chiefs football game when several extremely drunk fans in nearby seats begin to harass her. She asks a security officer to do something about this, but he refuses. She then offers him $$100$ if he'll stop the problems. The officer then warns the fans and the harassment ends. Freida refuses to pay the officer $$100.$ What result?

Group of answer choices

She must pay. He provided consideration.

No the contract is unconscionable.

She doesn't have to pay. The officer was under a pre$-$existing duty to stop the harassment.

She must pay. He accepted a unilateral offer by performing.