For GMDSS, which statement concerning compulsory vessels is TRUE?

A
Vessels over 500 gross tons must carry at least three licensed GMDSS Radio Operators.
B
Passenger vessels between 300-500 gross tons need to carry only one licensed GMDSS Radio Operator, but passenger vessels larger than 500 must carry two licensed Operators.
C
Vessels larger than 500 gross tons must carry certain additional GMDSS equipment than what a vessel between 300-500 gross tons must carry.
D
Vessels between 300-500 gross tons need to carry no more than one EPIRB, SART and survival craft transceiver, but vessels larger than 500 gross tons must carry two of each unit.
E