What Is a Major Advantage of Video-Assisted Thoracoscopic Surgery (VATS)

What is a major advantage of video-assisted thoracoscopic surgery (VATS) ?

A) The surgeon can record entire surgical procedure on a video.
B) The surgeon can remove tumors of the lung through a small keyhole incision.
C) The surgeon can x-ray and excise tumor in the same procedure.
D) The surgeon can avoid the use of a closed chest drainage system after surgery.