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

Options

A. `Rs 7000`
B. Rs 8000`
C. Rs 9000`
D. Rs 1000`

Answer

B