From an Artists Point of View:

Often we scold children when they see nude pictures. And we try (our level best) to shield away from (A) category.

In Paris, I was stunned : in seeing beautiful sculptures in white marble and in seeing school students sitting on the floor in Louver museum drawing these sculptures. Infact the tutor is around to make suitable corrections. Probably these children donot see nudity as a vulgar scene. It is seen from an aritist point of view. I was bowled over.

Click the attached picture and see what I said.