In below this demonstrated figure, there demand curve: (w) D0D0 is perfectly price-inelastic. (x) DD is perfectly price-elastic. (y) DD has a price elasticity coefficient of unity (1). (z) D0D0 has a price elasticity coefficient of infinity.
![1412_Price Elasticity of Demand1.png](https://secure.tutorsglobe.com/CMSImages/1412_Price%20Elasticity%20of%20Demand1.png)
Please choose the right answer from above...I want your suggestion for the same.