Excerpted from "the children's hour" by henry wadsworth longfellow i hear in the chamber above me the patter of little feet, the sound of a door that is opened, and voices soft and sweet. from my study i see in the lamplight, descending the broad hall stair, grave alice, and laughing allegra, and edith with golden hair. what is the rhyme scheme of the poem? a. abab b. abba c. abcb d. abcd