Refer to the figure below. Let εX denote the price elasticity of demand at point X. Which of the following describes the relationship between εA, εB and εC?

Refer to the figure below. Let εX denote the price elasticity of demand at point X. Which of the following describes the relationship between εA, εB and εC?
A.εB> εC> εA
B.εA> εB> εC
C.εA> εC> εB
D.εC> εB> εA
正确答案：εA> εC> εB