Robin plans to open a bar in a high-crime area. She had difficulty obtaining insurance for the business. She found an insurer willing to write the coverage, but only if Robin agreed to have a security alarm system in operation at all times when the business is closed. Robin's promise to have a security alarm system operational as a condition of having the insurance coverage in force is a
A) binder.
B) warranty.
C) waiver.
D) deductible.