Sufficientcargotanksshallbe（）priortoeachballastvoyageinorderthat，takingintoaccountthetanker’stradingpatternandexpectedweatherconditions，ballastwaterisputonlyintocargotankswhichhavebeencrudeoilwashed.
A. inerted
B. crudeoilwashed
C. gasfreed
D. batterneddown
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