Lucy says to Schroeder, "I'll give you a Pepsi if you play Sonata No. 17 in D minor for me." Schroeder groans, but leans into his piano and begins to play.Eleven minutes later, he strikes the last chord and Lucy hands him a Pepsi.

These facts describe what kind of contract according to the taxonomy we learned at the beginning of the term?

Group of answer choices

Bilateral and executory

Unilateral and executory

Bilateral and executed

Unilateral and executed