11. The commonest bacterial cause of cervicofacial actinomycosis is

A. A. naeslundii
B. A. viscosus
C. A. israelii
D. A. meyeri

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12. Which of the following bacteria is moderately saccharolytic?

A. Bacteriodes fragilis
B. B gingivalis
C. B melaninogenicus
D. B levii

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