112. GMDSS regulations require that vessels carry two- way VHF for survival craft. How many are required, and when do the regulation apply?

A. 3 sets. All vessels from August 1993
B. One per lifeboat and on spare from August 1993
C. None at present, 3 sets on all ships from August 1995
D. 3 sets. New builds from February 1992. Other vessels from February 1995.