Pt. suffering from sub mandibular gland abscess, dentist made a stab incision and is fixing a rubber drain (suction drain) to evacuate the pus, the drain si sutured

Pt. suffering from sub mandibular gland abscess, dentist made a stab incision and is fixing a rubber drain (suction drain) to evacuate the pus, the drain si sutured?
A. Intra oral
B. Form angle of the mandible
C. Between mylo-hypoid muscles and...***