An empty swimming pool is being filled with water from a hose.
The volume of the water, v, in cubic feet, t hours after the hose has been turned on is represented by the equation v(t)=42t.
The volume of the water, depending on the height of the water in the pool, h, is represented by the equation v(h)=180h.
The amount of chlorine, c, in ounces, that needs to be added to the pool depending on the volume of water is represented by the equation c(v)=0.002v.
Which of the following represents the amount of chlorine that needs to be added depending on the height of water in the pool?
A. c(v(h))
B. c(v(t))
C. v(c(h))
D. v(c(v))