Which is an accurate definition of a haiku?

A. A rhyming poem with 14 lines that can either be written in English or Italian forms

B. A non-rhyming 17-syllable poem generally divided into three lines and dealing with nature

C. A poem with 5 lines that has a specific rhyme scheme and is often humorous

D. A type of poem that tells a story and often focuses on heroic characters from the past