The Table Below Shows the Demand Schedule for Museum Admissions

The table below shows the demand schedule for museum admissions in a small city. $\begin{array}{|c|c|}\hline \begin{array}{c}\text { Price } \\\text { (per visit } \\\text { per person) }\\\end{array} & \begin{array}{c}\text { QuantityDemanded } \\\text { (thousands of }\\\text { person-visits per year) }\end{array} \\\hline \$ 10 & 2 \\\hline \$ 8 & 4 \\\hline \$ 6 & 6 \\\hline \$ 4 & 8 \\\hline \$ 2 & 10 \\\hline\end{array}$ TABLE 4- 1
-Refer to Table 4- 1. Between the prices of $4 and $6 the price elasticity of demand is

A) 0.40.
B) 1.40.
C) 1.00.
D) 0.50.
E) 0.71.