"Collective nouns (committee, team, army, family etc) can take either it/which or they/who.
The commmittee which has met...It...
The committee who have met... They...
The difference is one point of view: the singular stresses the impersonal unity of the group; the plural the personal individuality of its members. "
from Rediscover Grammar by David Crystal
So I think the answer is either depending on context. Helpful??