Read this quotation: Two households, both alike in dignity William Shakespeare, Romeo and Juliet, Prologue Why is this verse an example of iambic pentameter? A. It contains four pairs of syllables that are alternately stressed and unstressed. B. It contains 10 pairs of syllables that are alternately stressed and unstressed. C. It contains five pairs of syllables that are alternately unstressed and stressed. D. It contains four pairs of syllables that are alternately unstressed and stressed.