Tissue Trauma Is a Hazard of Suctioning

Tissue trauma is a hazard of suctioning.All of the following will prevent tissue trauma EXCEPT ____________________

A) hyperinflation of the patient's lungs before and after the procedure.
B) limiting the suction attempt to no more than 15-seconds.
C) vacuum pressures between -80 and -120 mmHg.
D) pressures should be set as low as possible while still permitting effective removal of secretions.