To Monitor a Patient for the Possibility of Reactive Bronchospasm

To monitor a patient for the possibility of reactive bronchospasm during aerosol drug therapy, what should you do?
1) Measure pre- and postpeak flow and/or percentage forced expiratory volume in 1 second (%FEV₁) .
2) Auscultate for adventitious breath sounds.
3) Carefully observe the patient's response.
4) Communicate with the patient during therapy.

A) 1 and 3 only
B) 1, 3, and 4 only
C) 2, 3, and 4 only
D) 1, 2, 3, and 4