Which of the following statements best describes a key difference between price elasticity of supply and price elasticity of demand?

Price elasticity of supply is always positive due to the law of supply, while price elasticity of demand is usually negative due to the law of demand.

Price elasticity of supply measures consumer responsiveness, while demand measures producer responsiveness.

Price elasticity of demand is always greater than one, while supply is always less than one.

Price elasticity of supply uses the midpoint method, while price elasticity of demand does not.