Randy is a firefighter who rescues the Johnson family's cat from a burning building. Since the Johnson family was so grateful, they told Randy that they would give him $10,000 as a reward and put this promise in writing. When Randy comes to collect the next week, the Johnsons tell Randy that they have changed their mind. If Randy sues for $10,000, who wins, and why?

Group of answer choices

The Johnson family, because this falls under the preexisting duty exception

The Johnson family, because this falls under the past consideration exception

Randy, because the Johnson family made a promise in writing

The Johnson family, because there is no definite term of when Randy would be paid