Here's a problem to solve: An astronomer observes that a planet rotates faster after a meteorite impact. Which is the most likely effect of this increase in rotation?

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

- A: Planetary density will decrease.
 
- B: Planetary years will become longer.
 
- C: Planetary days will become shorter.
 
- D: Planetary gravity will become stronger.
 