Which of the following is consistent with the law of supply?
a) As the price of calculators falls, the supply of calculators increases, ceteris paribus.
b) As the price of calculators rise, the supply of calculators increases, ceteris paribus.
c) As the price of calculators rise, the quantity supplied of calculators decreases, ceteris paribus.
d) As the price of calculators rise, the quantity supplied of calculators increases, ceteris paribus.