On Monday, Neil tells Outdoor Landscaping, Inc., that he will pay Outdoor $500 if a variety of tasks are completed by Friday. On Wednesday, when Outdoor is more than half done with the work, Neil says that he has changed his mind. Under the present-day view, these parties had:
a) an expired contract when Neil said that he had changed his mind.
b) a quasi contract when Neil said that he would pay for certain work.
c) a unilateral contract as soon as Outdoor began to perform.
d) no contract.