Task: Question Answering
Input (English): Question: Point out the FALSE response regarding bronchiolitis: 
 Options:  <1> It is clinically manifested by cough, nasal discharge and respiratory distress. <2> It is the most frequent disease of the lower respiratory tract in the first two years of life. <3> Prolonged breastfeeding can act as a protective factor. <4> The bacterial etiology produces more severe symptoms than the viral etiology. <5> General measures are required such as respiratory isolation, oxygen therapy, fluid therapy and humidification of the environment.
Output (English): 4