Stephen Sundlov, director of the Center for Food Safety and Applied Nutrition in the United States, said: "The melamine levels we detect from dairy products are extremely low, and from a public health or infant health perspective, we think trace amounts of melamine are perfectly fine. Parents who have given a baby a product before should continue to do so. This is most beneficial for the baby. ". In this passage, Stephen mainly wants to tell everyone? ['Extremely low levels of melamine in dairy products.', 'Babies should continue to consume dairy products.', 'Trace amounts of melamine are not harmful to the human body.', "Maintaining a baby's good eating habits is important for baby growth."]