Zach rented a car from Best Car Rentals, LLC. He wanted to be sure that any problems or accidents were covered by an insurance policy, so he purchased additional insurance coverage from Best Car Rentals for the duration of the rental. Which of the following is true in this situation
a. Zach has entered into a surety agreement.
b. Zach has entered into a guaranty agreement.
c. Zach has entered into an indemnity contract.
d. The extra coverage does not constitute a contract.