Recessive information is a special type of information. It is different from the explicit information that can be obtained directly or indirectly in social and economic life. It is a kind of unborn information that can prompt and predict future development trends. Analytical research is required. What is the right thing to understand about the "hidden information" in this passage? ["Can't get directly, only indirectly.", 'May predict unborn "fetal movement".', 'Can remind future development trends.', 'Can prompt information that has not been made public.']