Answer:
A. Gretchen is incorrect because there is a binding bilateral contract.
Step-by-step explanation:
Mainly there are two types of contract i.e unilateral contract and the bilateral contract.
The unilateral contract is the contract when the offer is made to the anyone
while the bilateral contract is the agreement in which the both parties are agreed and bind to perform his/ her obligations.
In the given case, it reflects the bilateral contract as the Haley returns the dog and he requested for the money from the Gretchen