D(x) is the price, in dollars per unit that consumers are willing to pay for x units of an item and S(x) is the price, in dollars per unit that producers are willing to accept for x units.

D(x)= (x-4)^2, S(x)= x^2+2x+6

A. Find the equilibrium point

B. Find the consumer surplus at the equilibrium point

C. Find the producer surplus at the equilibrium point