Which of the following compounds will react with Na to form 4,5-diethyloctane?
A. `CH_(3)CH_(2)CH_(2)CH_(2)Br`
B. `CH_(3)CH_(2)CH_(2)-underset(CH_(3))underset(|)(C)H-CH_(2)CH_(2)Br`
C. `CH_(3)CH_(2)CH_(2)CH_(2)-underset(Br)underset(|)(C)H-CH_(3)`
D. `CH_(3)CH_(2)CH_(2)CH_(2)-underset(Br)underset(|)(C)H-CH_(3)`
