When Irrigating a Patient's Wound with a Syringe, a Nurse

When irrigating a patient's wound with a syringe, a nurse directs the flow of solution from the superior area to the inferior area of the wound. The rationale for this action is to

A) Slow the irrigation of the wound, thus eliminating patient discomfort.
B) Assist the nurse in proceeding in an organized manner.
C) Direct the flow of solution from the least contaminated area to the most contaminated area.
D) Use gravity in increasing the force of the irrigation.