help please.

12. Guided Problem Solving Abel, Ben, and Cam left the computer lab at 2:30 P.M. Cam walked the fastest and Abel the slowest. At the same time, Dan and Erin were walking toward the lab. Erin was walking faster than Dan but slower than Cam. Sketch a graph of each student's distance from the computer lab over time. For which students does distance from the lab increase with time?" . Which student is represented by the steepest line in the graph