What Are the Signs and Symptoms of Primary Herpetic Gingivostomatitis

What are the signs and symptoms of primary herpetic gingivostomatitis?

A) The ulcers have red, elevated, "halolike" margin with depressed yellow or gray central area
B) Presence of a large proportion of gram-positive organisms
C) The most commonly affected teeth are incisors
D) Inflammatory exudates seeping into the oral cavity