Transcript text: According to Edgar Allan Poe in "The Philosophy of Composition," why are long poems a problem when it comes to "unity of impression"? A. Because they are essentially several poems in one, which means there is no unity B. Because they have to be read in more than one sitting, which breaks up the effect C. Because they contain so much imagery and symbolism, which becomes overwhelming D. Because they become harder to find rhymes for, which ruins the overall mood