18. According to this passage, which of the following statements is true about green marketing?(A) Many studies have been conducted on the impact of green marketing on consumers in the developing countries.(B) In comparison to Brazil, French consumers had bigger changes in buying behaviors as a result of green marketing.(C) The results of these surveys show that gender and country should be taken into account when companies develop green marketing strategies.(D) Research on green marketing in the late 1980s highlighted consumer interest in green products but changed to a business perspective in the early 1990s.