Marketing Inc. offers to create a campaign to increase N'Ice Cream Inc.'s online business. N'Ice agrees to pay for the service. These parties have

A) no contract.
B) an express contract.
C) an implied contract.
D) a quasi contract.

An express contract is formed when the parties have explicitly agreed on the terms of the contract, either orally or in writing. In this scenario, Marketing Inc. and N'Ice Cream Inc. have clearly agreed on the service and payment, forming an express contract.