![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-56/ti_inject-812ce.png)
In the above figure, the movement from point a to point b reflects
A.
an increase in the price of pizza.
B.
an increase in the supply of pizza.
C.
an increase in the number of producers of pizza.
D.
a decrease in the cost of the tomato sauce used to produce pizza.
E.
a decrease in income if pizza is a normal good.