Which Statement Regarding Pregnancy and Asthma Is Accurate

Which statement regarding pregnancy and asthma is accurate?

A) Progesterone causes smooth muscle relaxation, which can worsen asthma symptoms.
B) Poorly controlled asthma has been associated with an increased incidence of spontaneous abortion.
C) A decrease in peak expiratory flow rate (PEFR) of more than 20% of the patient's personal best requires a visit to the emergency room.
D) It is estimated that approximately two thirds of patients will have worsening of asthma symptoms.

Correct Answer:

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