___________ is a contract for a supply that does not procure or specify a firm quantity of supplies (other than a minimum or maximum quantity), and…

___________ is a contract for a supply that does not procure or specify a firm quantity of supplies (other than a minimum or maximum quantity), and that provides for the issuance of orders for the delivery of supplies during the period of the contract. Where as _________ is a contract that may be used to acquire supplies and/or services when the exact times and/or exact quantities of future deliveries are not known at the time of contract award.