Based on the bolded terms in the following documentation, what procedure is performed

Based on the bolded terms in the following documentation, what procedure is performed? A curvilinear incision was made beginning just anterior to the left ear, curving posteriorly, then upward and anteriorly, to and at the hair line just off the midline. The resulting musculocutaneous flap was then reflected anteriorly. Multiple burr holes were then placed and connected using the high-speed drill to create a large free bone flap. This was removed from the immediate operative field. Directly beneath the bone flap was a large well-formed clot which delivered itself from the epidural space. A bleeding point was found in the region of the middle meningeal artery. This was carefully and thoroughly coagulated using bipolar cauterization. A small opening was then made in the dura to ensure that there was not an underlying blood clot. There was not. This opening was primarily closed using 4-0 Nurolon. Additional meticulous hemostasis was then obtained. The bone flap was then replaced and held in place using multiple KLS fixation devices. Skin was then reapproximated using 2-0 Vicryl for the subcutaneous tissues and 5-0 Monocryl for the skin. The patient was then awakened from anesthesia at which time his vital signs were stable, and he was neurologically improved from preoperatively. Option A Laminectomy Option B Craniotomy Option C Craniectomy Option D Lobectomy