A marine surveyor is inspecting a 40-foot recreational vessel with an installed toilet. Which of the following represents a compliant Marine Sanitation Device (MSD) configuration when operating in all U.S. navigable waters, including those designated as 'No Discharge Zones'?
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A
A Type I MSD that macerates and disinfects waste before discharge.
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B
A Type II MSD that provides a higher level of treatment but still discharges.
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C
A Type III MSD with the Y-valve secured in a position to direct waste to the holding tank.
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D
A portable toilet that is not permanently installed.