Here's a problem to solve: When people walked on the Moon, they found that they could jump higher than they could back on Earth. Why is this true?

Among the 4 following options, which is the correct answer?

- A: There is no atmosphere on the Moon.
 
- B: The Moon exerts less gravitational force than Earth.
 
- C: Space suits helped them jump higher.
 
- D: The Moon rotates faster than Earth does.
 