Which of the following statements is true about the price elasticity of demand along a downward sloping linear demand curve?

Group of answer choices

It is inelastic at high prices and elastic at low prices.

It is unit-elastic throughout the demand curve.

It is elastic at high prices and inelastic at low prices.

The slope of a downard linear curve changes constantly but the elasticity of demand stays constand over all sectoins of the curve.