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Oral ulcers which occurs in groups, persist for about 6 weeks and leave scars on healing are______________?

Oral ulcers which occurs in groups, persist for about 6 weeks and leave scars on healing are______________?

A. Recurrent aphthous major
B. Recurrent aphthous minor
C. Recurrent herpetiform ulcers
D. Acute herpetic gingivostomatitis