An artificial satellite moves around planet X at a distance $r = 7.0 \times 10^6\,\text{m}$ from the centre of planet X. The satellite’s average orbital speed, $v$, is 3500 m/s. What is the period of the orbit?
- A21 minutes
- B52 minutes
- C1 hour and 45 minutes
- D3 hours and 29 minutes