Fact Pattern 8-1

Fact Pattern 8-1
Dave's Hobby Town and Eva's Yarn Shoppe are adjacent stores with adjoining parking lots.Dave offers Eva a discount on purchases from Dave's store if Eva will not tow the cars of Dave's customers who park in Eva's lot.
-Refer to Fact Pattern 8-1.Dave's discount is legally sufficient consid?eration

A) because it is a promise of something of value.
B) only if Dave adds a cash rebate.
C) only if Eva uses it.
D) under no circumstances.