A satellite rotates about a planet at the rate of 360° per 24 hours. The planet attracts a 1 kg mass with 10 N force at a distance of 6000 km. The distance of the satellite from the centre of the planet is

• A. between 20,000 km and 30,000 km
• B. between 30,000 km and 40,000 km
• C. between 40,000 km and 50,000 km
• D. well above 50,000 km