Which of the Following Angulations of the Needle MUST Be

Multiple Choice

Which of the following angulations of the needle MUST be followed during the administration of the posterior superior local anesthetic nerve block?

A) Superiorly at approximately 45 degrees and medially at approximately 90 degrees to the occlusal plane
B) Superiorly at approximately 90 degrees and medially at approximately 45 degrees to the occlusal plane
C) Superiorly at approximately 45 degrees and medially parallel to the occlusal plane
D) Superiorly at approximately 45 degrees and medially at approximately 45 degrees to the occlusal plane