​How Did the Decisions of Gratz V

​How did the decisions of Gratz v. Bollinger and Grutter v. Bollinger answer the question of whether promoting diversity was grounds enough to support the constitutionality of affirmative action?

A) It was in the government's best interest to promote educational diversity, and race could be heavily weighted in making an admission decision.
B) It was in the government's best interest to equally balance educational diversity with all other factors in making an admission decision.
C) It was in the government's best interest to promote educational diversity, as long as admission decisions were not heavily influenced by race considerations.
D) It was in the government's best interest to make race a predominant factor in making an admission decision.​