The client who is pregnant asks the nurse, “What does category A mean if the doctor orders that medication for me?” Which statement best describes the scientific rationale for the nurse’s response? 1....

The client who is pregnant asks the nurse, “What does category A mean if the doctor orders that medication for me?” Which statement best describes the scientific rationale for the nurse’s response?

1. Category A is the safest medication a client can take when pregnant. 2. Category A medications are safe as long as the client does not take them during the first trimester. 3. Research has not determined if these medications are harmful to the fetus or not. 4. This category is dangerous to the fetus but could be prescribed in emergencies.