Here are three pairs of initial and final positions, respectively, along an x axis.

1. -3m, +5 m
2. -3m, -7 m
3. +7m, -3 m

Which pairs give a negative displacment?

• A: motion 1
• B: motion 2
• C: motions 2,3
• D: motions 1,3
• E: none of the above