$\text { Demand Schedule for Ski Tickets }$ $\text { TABLE 4-2 }$

$\text { Demand Schedule for Ski Tickets }$
$\begin{array}{|l|l|}\hline \text { Price (\$) } & \begin{array}{l}\text { Quantity } \\\text { Demanded (no. of } \\\text { tickets) }\end{array} \\\hline 120 & 0 \\\hline 110 & 100 \\\hline 100 & 200 \\\hline 90 & 300 \\\hline 80 & 400 \\\hline 70 & 500 \\\hline 60 & 600 \\\hline 50 & 700 \\\hline 40 & 800 \\\hline 30 & 900 \\\hline 20 & 1000 \\\hline 10 & 1100 \\\hline 0 & 1200 \\\hline\end{array}$
$\text { TABLE 4-2 }$
-Refer to Table 4- 2. The price elasticity of demand over the interval of the demand curve between prices of $40 and $20 is

A) 1.0
B) - 0.33
C) - 3.0
D) 3.0
E) 0.33