According to the Keown Book,one Way to Think of Liquid

According to the Keown book,one way to think of liquid assets is as a(n)

A) reservoir,with money moving in as wages are received and moving out as living expenses are paid.
B) apple tree farm: pick money off of the money tree whenever you need it.
C) garden: plant the seeds and the green is readily available.
D) wind current: easy come,easy go.