What is a structural characteristic of a litany poem?

A) All stanzas have the same rhyme scheme.

B) The ending must be in the form of a couplet.

C) The stanzas follow a set rhyme scheme, and all lines are iambic pentameter.

D) Many lines or stanzas begin with the same word or phrase.

D) Many lines or stanzas begin with the same word or phrase.