There are 3 basic marketing price structures or challenges associated with service. The one that has the following set of listed "challenges" with that type of pricing structure is ______. Challenges=monetary price must be adjusted to reflect the value of non-monetary costs; and information of service costs is less available to customers; hence, price may not be a central factor. A) cost based pricing structure B) Demand based pricing structure C) competition based pricing structure D) none of the above