A student gives three time periods: - the time $T_S$ for the Earth to complete one orbit around the Sun - the time $T_R$ for the Earth to complete one rotation about its axis - the time $T_M$ for the Moon to complete one orbit around the Earth. Which row indicates the shortest time period and the longest time period?
- Ashortest $T_S$, longest $T_R$
- Bshortest $T_R$, longest $T_S$
- Cshortest $T_R$, longest $T_M$
- Dshortest $T_M$, longest $T_S$