Four turtles are moving away from the same rock on a beach. Each statement below describes a different turtle. Which turtle or turtles must have a proportional relationship between their time spent moving and their distance from the rock? Show your work and circle all that apply. A. The turtle moves 1.5 feet every 30 seconds.

B. After 4 minutes, the turtle has walked 12 feet away from the rock.

C. The turtle walks for a bit, then stops for a minute before walking again

D. The turtle walks away from the rock at a constant rate.