After the researchers see the number of subjects they will have to interview, they reexamine their criteria. The researchers could decrease the number of subjects while having the least impact on the reliability of the study by .A. increasing p and decreasing B.
B. increasing p or decreasing B.
C. decreasing p and increasing B.
D. decreasing p or increasing B.

A5-year-old boy suddenly begins coughing while eating peanuts. he is choking and gagging. when he is brought to the ed, but he is awake and is able to give his name. on physical examination, his vital signs are stable. on examination of the chest, inspiratory stridor and intercostal and suprasternal retractions are apparent. which of the following is the most appropriate initial step in management? - allow patient to clear foreign object by spontaneous coughing- clear oropharynx with multiple blind sweeps with finger- position patient and perform back blows- stand behind patient and perform abdominal thrusts- perform emergency tracheostomy and take to surgery