With fixed exchange rates and no private currency flows, when the central bank buys domestic currency the domestic money supply is ?

A. A reduction in unemployment benefits will reduce the unemployment benefits will reduce the unemployment rate.
B. The rate of inflation should be reduced because it robs the elderly of their savings.
C. The unemployment rate should be reduced because unemployment robs individuals of their dignity.
D. The state should increase subsidies to universities because the future of our country depends on education.