Arrange the following elasticity degrees along the demand curve in their ascending order.

(A) Elasticity $(e_D) = 1$
(B) Elasticity $(e_D) > 1$
(C) Elasticity $(e_D) < 1$
(D) Elasticity $(e_D) = 0$

Choose the correct answer from the options given below:

(D), (C), (A), (B)

The correct answer is Option (4) → (D), (C), (A), (B)

Along a linear demand curve, the elasticity of demand (eᴅ) changes from top to bottom:

• At the lower end, demand is perfectly inelastic, so eᴅ = 0 → (D)

• Then it becomes inelastic, where eᴅ < 1 → (C)

• At the midpoint, elasticity is unitary, where eᴅ = 1 → (A)

• Toward the upper end, demand is elastic, where eᴅ > 1 → (B)