Your vessel is in Charleston, S.C. You need not clear Customs if __________.

A
all the cargo on board is of U.S. origin and destined for New York
B
you took on no new cargo in Charleston, S.C. and are bound for Puerto Rico and thence foreign
C
you did not discharge any cargo in Charleston and are bound for Panama
D
you did not load any cargo in Charleston and are bound for Halifax
E