Man: I think its going to snow. Woman: Going to snow？ The ground is already covered! Quest

Man: I think its going to snow. Woman: Going to snow？ The ground is already covered! Question: What conclusion can we make from her reply？

A．It will snow for a long time.

B．People are ready for snow.

C．It has been snowing for some time.

D．The snow is disappearing.

请帮忙给出正确答案和分析，谢谢！