The plans of buyers and sellers are mutually compatible when:

a. the equilibrium price is established.
b. consumers are able to purchase the quantity of the good that they want to purchase, but firms cannot sell all they offer for sale.
c. there is excess supply.
d. sellers are able to sell the quantity of the good that they offer for sale, but consumers cannot purchase all they want to.
e. consumers and sellers agree that the price is fair.