Correct answer choice is :
The law of demand states that conditional on all else being equal, as the price of a good increase, quantity demanded decreases; conversely, as the price of a good decrease, quantity demanded increases. The excess stock makes the price to fall and quantity demanded to rise. A reduction in supply will make an increase in the balance price and a decrease in the equilibrium amount of a good. Excess demand makes the price to rise and quantity demanded to decrease.