Which one is correct in agreement between the pronoun and its antecedent?

A、Theownerandthecaptainrefusedtoleavehisdistressedship.
B、Thecommitteefilledintotheroomandtooktheirseats.
C、Eachofthegirlshadtheirassignmentscompleted.
D、NeitherMarynorSusansaidtheywouldbethere.