下列犯罪中，不构成牵连犯的是：

A．为盗窃枪支而侵入他人住宅，窃得枪支后又予以私藏，构成盗窃枪支罪、非法侵入他人住宅罪

B．枪杀一人的同时造成另一人重伤的结果，构成故意杀人罪与故意伤害罪

C．盗掘古墓葬后为湮灭罪迹又毁坏文物，构成盗掘古墓罪与破坏珍贵文物罪

D．为了诈骗而伪造公文，构成诈骗罪与伪造公文罪

—What were you doing at 8 o’clock this morning?

—____.

A．I am having breakfast.

B．I want to go to visit my grandfather.

C．I was talking with my teacher at that time.

D．I stayed there for two days.