Choose the combining form which best completes the following group:

PONT/O, CRANI/O, FORAMIN/O, _______.
A. COCHLE/O
B. ENCEPHAL/O
C. SALPING/O
D. BLEPHAR/O


plz help im lost

Choose the combining form which best completes the following group:

PONT/O, CRANI/O, FORAMIN/O, _______.