Some varieties of rice plants are allelopathic, which means that they release chemicals that block the growth of other plants that might compete for nutrients. The compound below is one of the...

Some varieties of rice plants are allelopathic, which means that they release chemicals that block the growth of other plants that might compete for nutrients. The compound below is one of the allelopathic chemicals produced by rice. (Arabinose is a simple sugar.) a. Is the compound a catechol-, a resorcinol-, or a hydroquinone-containing phenol? b. Which stereoisomer (cis or trans) is present?