Use the following data to answer question 14-18 :
6, 0, 1, 2, 6, 8, 2, 1, 5, 1, 4, 9, 6, 1, 5, 6, 5, 6, 8, 6, 6.
The mean value is

• A.4.47
• B.4.0
• C.4.25
• D.4.05
• E.4.21