(b) Purchases of correctional industries articles or products by state offices, departments, institutions and agencies shall be made on requisition by the office, department, institution or agency requiring the articles or products.
(c) Political subdivisions, not-for-profit corporations and charitable agencies chartered in West Virginia, units of the federal government and units of government of other states may purchase articles and products produced by correctional industries. Entities which contract with the state, its political subdivisions, its agencies or its public institutions may purchase from correctional industries articles and products used in the performance of their contracts.