Legislation defining the mission of the Federal Reserve​ states: "The Board of Governors of the Federal Reserve System and the Federal Open Market Committee shall maintain​ long-run growth of the monetary and credit aggregates commensurate with the​ economy's long-run potential to increase​ production, so as to promote effectively the goals of maximum​ employment, stable​ prices, and moderate​ long-term interest​ rates." This is an example of​ a:
A.
dual mandate.
B.
multiple mandate.
C.
single mandate.
D.
hierarchical mandate.