A farmer has 12 acres of land. He plans to plant w acres of wheat and b acres of barley on his land. If he plans to plant wheat in no more than 3 acres of land, which system of inequalities represents the possible values for b and w ?

A w + b ≥ 12
B w + b ≥ 12
C w + b ≤ 12
D w + b ≤ 12