What is the overall ventilatory goal when assisting ventilations with a patient who is spontaneously​ breathing?

A.Get the ventilatory rate to 8 to​ 10/min.
B.Get the ventilatory rate to 10 to​ 12/min.
C.Keep the ventilatory rate at whatever the patient is spontaneously breathing.
D.Get the ventilatory rate to 14 to​ 20/min.