Suppose that Squeaky Clean and Biobase are the only two producers of chlorine for pools. The inverse market demand for chlorine is p=32-2q, where q is measured in tons and p is dollars per ton. Assume that chlorine can be produced by either firm at a constant marginal cost of $16 per ton and there are no fixed costs. What is the equilibrium quantity of chlorine?
a) 8 tons
b) 12 tons
c) 16 tons
d) 20 tons