A survey for a certain year found that $90\%$ of pregnant women received medical care at least once before giving birth. Of these women, $60\%$ received medical care from doctors, while $40\%$ received medical care from other healthcare providers.
Given this information, which one of the following statements can be inferred with certainty?
- More than half of the pregnant women received medical care at least once from a doctor.
- Less than half of the pregnant women received medical care at least once from a doctor.
- More than half of the pregnant women received medical care at most once from a doctor.
- Less than half of the pregnant women received medical care at most once from a doctor.