Solve the Problem. -Mark Started Out by Walking Up a Hill for 5

Solve the problem.
-Mark started out by walking up a hill for 5 minutes. For the next 5 minutes he walked down a steep hill to an elevation lower than his starting point. For the next 10 minutes he walked on level ground. For the next 10
Minutes he walked uphill. Determine which graph of elevation above sea level versus time matches the given
Situation.

A)
B)
C)
D)