While you finish a class I cavity, the enamel is sound but you notice a brown line in the dentine and on the Dento-enamel junction, what is your response,
A. You leave it and complete the final restoration
B. You extend your preparation and clean it
C. You apply a cover of varnish
A. You leave it and complete the final restoration
B. You extend your preparation and clean it
C. You apply a cover of varnish