As the price falls by P4 to P3 to P2 to P1 beside such demand curve for Pixie's cheesy fried grits, then total revenue: (w) always rises. (x) always falls. (y) rises then falls. (z) falls then rises.
![1627_Price Elasticity of Demand5.png](https://secure.tutorsglobe.com/CMSImages/1627_Price%20Elasticity%20of%20Demand5.png)
How can I solve my Economics problem? Please suggest me the correct answer.