Which of the following statements is (are) true for the compound (3R, 4R) -3,4-dimethylhexane?

A) This compound is chiral.
B) The enantiomer of this compound is (3S, 4S) -3,4-dimethylhexane.
C) This compound is a diastereomer of (3R, 4S) -3,4-dimethylhexane.
D) all of the above
E) none of the above

The compound is chiral because it has two chiral centers (carbon atoms with four different groups attached), making statement A true. The enantiomer of a chiral compound has the opposite configuration at all chiral centers, making statement B true for (3S, 4S)-3,4-dimethylhexane. Diastereomers are stereoisomers that are not mirror images of each other, which applies to (3R, 4R)-3,4-dimethylhexane and (3R, 4S)-3,4-dimethylhexane, making statement C true. Therefore, all statements are correct.