Which of the Following Descriptions Concerning the Injection Site for the Anterior

Which of the following descriptions concerning the injection site for the anterior middle superior alveolar local anesthetic nerve block is CORRECT?

A) Approximately midway between the median palatine raphe and the palatal gingival margin of the maxillary premolars
B) Approximately10 mm medial and directly superior to the palatal gingival margin of the maxillary third molar,anterior to the depression of the greater palatine foramen
C) At the height of the mucobuccal fold at the apex of the maxillary canine
D) At the height of the mucobuccal fold at the apex of the maxillary first premolar