Motion in a Straight Line

When a ruler falls vertically, 5 different persons catch it with different reaction times (g = 9.8 m/s^2). A: 0.20 s, B: 0.22 s, C: 0.18 s, D: 0.19 s, E: 0.21 s. What is the correct order of the distance travelled by the ruler for each person?