Refer to the Given Table A)between $20 and $30

Multiple Choice

Refer to the given table. The equilibrium price in this market is: $$\begin{array} { | r | r | r | } \hline \text { Price Per Unit } & \text { Columu A Units Per Year } & \text { Colum B Units Per Year } \\\hline \$ 20 & 100 & 40 \\\hline \$ 30 & 95 & 50 \\\hline \$ 40 & 80 & 60 \\\hline \$ 50 & 65 & 70 \\\hline \$ 60 & 50 & \mathbf { 8 0 } \\\hline\end{array}$$  

A) between $20 and $30.
B) between $30 and $40.
C) between $40 and $50.
D) nonexistent.