A ground 100 $$\times$$ 80 m$$^2$$ has two cross roads in its middle. The road parallel to the length is 5 metre wide and the other road is 4 metre wide, both roads are perpendicular to each other. The cost of laying the bricks at the rate of ^ 10 per m$$^2$$, on the roads, will be:

A

₹ 700

B

₹ 800

C

₹ 900

D

₹ 8,000