Kevin goes fishing every Saturday. The table below shows the number of fish he caught each week for the last six weeks.
 Fish Caught
 Week Number of Fish
 1 4
 2 0
 3 2
 4 8
 5 4
 6 6
 What is the mean absolute deviation of the data above?
 A. 8
 B. 2
 C. 4
 D. 1