The Graph Below Shows the Maximum Angle Above the Horizon

Multiple Choice

The graph below shows the maximum angle above the horizon reached by the moon during the month of June.What was the average rate of change in the maximum angle from June 8 to June 14? ​ ​
​

A) -3.43 degrees per day
B) -16 degrees per day
C) -7 degrees per day
D) None of the above.