The operating margin for steel manufacturing industry is 27 percent in the current year. Which organization has been most efficient in controlling its operating costs in the current year? Select a Choice Below current question choices OptionA GHK Corp.'s operating margin is 23 percent. OptionB Ironclad Corp.'s operating margin is 26 percent. OptionC GoldBeam Corp.'s operating margin is 29 percent. OptionD JJB Corp.'s operating margin is 30 percent