You Have Determined Your Patient Receiving Volume Ventilation Has Flow

You have determined your patient receiving volume ventilation has flow asynchrony. How can this be improved?
1) Increasing peak flow
2) Decreasing inspiratory time
3) Adjusting rise time
4) Adding an inspiratory pause

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