A wall of dimensions 25m $$\times$$ 2m $$\times \frac{3}{4}$$ m is to be built by using bricks each of whose dimensions are 20cm $$\times$$ 10 cm $$\times$$ 7.5 cm. The number of bricks are needed to build this wall is

A

32000

B

30000

C

28000

D

25000