GMAT Test Prep: DS-87172369 GMAT Data Sufficiency

The results of a certain experiment included 6 data values that were all multiples of the same number c, namely, c, 8c, 2c, 5c, 4c, and 4c. Was the average (arithmetic mean) of the 6 data values greater than 8?

(1)c < 4

(2)c > 2
Select one of the following answer choices