Raveena and Prashant are walking around a 600 m by 400 m rectangular park, as shown.

They begin at the top left corner of the park and walk at constant but different speeds. Raveena walks in a clockwise direction and Prashant walks in a counter-clockwise direction. Points D and E divide the bottom edge of the park into three equal segments. When Raveena and Prashant meet for the first time, they are between D and E. Which of the following could be the ratio of Raveena's speed to Prashant Speed?

a) 4 : 3
b) 9 : 4
c) 5 : 2
d) 12 : 5
e) 17 : 7