<prompt> An infant develops a cough and fever. The X-ray examination is suggestive of bronchopneumonia. All of the following viruses can be the causative agent exceptParainfluenza virusesInfluenza virus ARespiratory syncytial virusMumps virus  <response>: The peak attack for viral pneumonia is between the age of 2nd and 3rd years and decrease thereafter.Viruses causing pneumonia are -RSVInfluenzaAdenovirusRhinovirusParainfluenza virus 