An Inter-Ocean Transfer Cargo Ship Was Forced to Jettison Some

An Inter-Ocean Transfer cargo ship was forced to jettison some cargo in heavy seas. The various interests in the voyage at the time the property was jettisoned were

If $400,000 worth of iron ore was jettisoned, for how much of this amount would Inter-Ocean Transfer be responsible under general average?

A) nothing
B) $160,000
C) $200,000
D) $400,000