"Time is but the stream I go a-fishing in. I drink at it; but while I drink I see the sandy bottom and detect how shallow it is. Its thin current slides away, but eternity remains."

What is the meaning of this passage?

A. A day standing in the sand near a stream fishing feels like the time is an infinite resource.

B. Time is fleeting and eternity can not be contained by time.

C. A day in nature is so peaceful, it seems like it goes on forever.

D. Drinking water is essential for life ​