Central Maine Power Co. made a promotional offer in which it promised to pay a substantial sum to any homeowner or builder who constructed new housing heated with electricity. Motel Services, Inc., which was building a small housing project for the city of Waterville, Maine, decided to install electrical heat in the units in order to qualify for the offer. It built the units and requested payment for the full amount of the promotional offer. Is Central Maine obligated to pay? Why or why not?