Sports Bar and Tasty Tacos Are Adjacent Businesses with Adjoining

Multiple Choice

Sports Bar and Tasty Tacos are adjacent businesses with adjoining parking lots. Sports Bar offers Tasty a discount on purchases if the restaurant will not tow the cars of Sports Bar's patrons who park in the restaurant's lot. The discount is legally sufficient consideration

A) because it is a promise of something of value.
B) because on acceptance, it will become a preexisting duty.
C) because the offeror considers it to be adequate.
D) under no circumstances.