7. After a particularly harsh winter, a country decides to help barley farmers by setting a price floor on the price of barley. The supply of barley is given by the equation Q5 = 40 + 2P, while the demand for barley is given by Q0 = 100 4P. The equilibrium before imposing the price floor is A) Q = 90. P = 20 B) Q = 60. P = 5 C) Q = 80, P = 5 D) Q=60,P=10(0)