Consider the following scenarios:
I. Madison says to a group of students, “I’ll pay $35 to the first one of you who shows up at my house and mows my lawn.”
II. Lea posts a flyer around town that reads, “Reward: $500 for information about the person who keyed my truck last Saturday night in the Wag-a-Bag parking lot. Call Lea at 555-5309.”
Which of these proposes a unilateral contract?
(a) I only
(b) II only
(c) Both I and II
(d) None of these