Which of the Following Statements Describes the Needle Pathway for an Intraseptal

Which of the following statements describes the needle pathway for an intraseptal injection?

A) Advances through the interdental papilla within the attached gingiva until bone is contacted and then forced deeper into the interdental bone
B) Advances through the free gingiva of the interdental papilla until bone is contacted
C) Advances from the mucogingival margin below the interdental papilla until bone is contacted
D) Advances from the mucogingival margin below the interdental papilla and then is forced deeper into the facial bone to deposit solution in the spongy bone adjacent to the apex of the teeth