Which best identifies a rhyming couplet?
 A, Night and morning with my tears: 
 And I sunned it with smiles,
 B, But only so an hour. 
 Then leaf subsides to leaf.
 C, I told my wrath, my wrath did end. 
 I was angry with my foe:
 D, And into my garden stole
 When the night had veiled the pole;