Read the following passage from “Shenandoah.” Which sound device is expressed by the (bolded) words?
Shenandoah, (I long to hear you),
Away, you rolling river,
Oh, Shenandoah, (I long to hear you),
Away, I'm bound away,
'Cross the wide Missouri.
A:alliteration
B:repetition
C:refrain
D:rhyme