A pendulum is shown in the diagram. The pendulum bob moves back and forth repeatedly between M and N. A student begins timing with a stop-watch when the bob arrives at M. He records each reversal of direction and switches off the watch at the tenth reversal. The watch reads 12.0 seconds. What is the period of the pendulum?
- A$0.60\,\text{s}$
- B$1.2\,\text{s}$
- C$2.4\,\text{s}$
- D$12.0\,\text{s}$