Which statement is FALSE concerning the use of approved buoyant work vests on board uninspected towboats? (Uninspected Vessel Regulations)

A
They may be substituted for up to 50% of the required life preservers.
B
They shall be of an approved type.
C
They shall be stowed separately from required lifesaving equipment.
D
They may be worn by crew members when working near or over the water.
E