Which of the Following Demonstrates the Law of Supply

Which of the following demonstrates the law of supply?

A) ​When leather became more expensive, belt producers decreased their supply of belts.
B) ​When car production technology improved, car producers increased their supply of cars.
C) ​When sweater producers expected sweater prices to rise in the near future, they decreased their current supply of sweaters.
D) ​When lemon prices rose, lemon growers increased their quantity supplied of lemons.