The following is the absolute value for the Mid-Point price elasticity of demand between two points on certain demand: Point A : Po = 15 amp; Qo =10...

The following is the absolute value for the Mid-Point price elasticity of demand between two points on certain demand: 

Point A : Po = 15 & Qo =10

while

Point B: P1 = 5 & Q1= 20

A. l Ep l = 3

B.  l Ep l = 1/3

C.  l Ep l = 3/2

D.  l Ep l = 2/3