The correct option is A team
Collective nouns refer to a group of people, thing or animals. In the given sentence, 'team' refers to a group of players collectively, hence 'team' is a collective noun, and option A is correct. Option B is incorrect because 'players' is a common noun, that names the noun 'player' in plural. Option C is incorrect because team is a collective noun but players is not, it's a common noun in plural form. Option D is incorrect because we do have a collective noun 'team', in the sentence.