Two cross roads, each of width 5 m, run at right angles through the centre of a rectangular park of length 70 m and breadth 45 m and parallel to its sides. Find the cost of constructing the roads at the rate of Rs. 100 per m2:

• A. Rs. 57,750
• B. Rs. 55,500
• C. Rs. 55,000
• D. Rs. 50,500