All of the Following Statements About Hydro-Boost System Accumulators Are

All of the following statements about hydro-boost system accumulators are true EXCEPT:

A) the accumulator is spring loaded or charged with pressurized fluid.
B) accumulators hold a charge of pressurized fluid as a reserve if fluid flow from the steering pump is lost or reduced.
C) accumulators are only pressurized when the pump flow stops.
D) the fluid compresses an internal piston and spring or a gas charge.