Louis Katz, a Cost Accountant at Papalote Plastics, Inc $$\begin{array} { | c | } \hline S _ { 8 } = 0.898 \\\hline r ^ { 2 } = 0.526341 \\\hline\end{array}$$

Louis Katz, a cost accountant at Papalote Plastics, Inc.(PPI) , is analyzing the manufacturing costs of a molded plastic telephone handset produced by PPI.Louis's independent variable is production lot size (in 1,000's of units) , and his dependent variable is the total cost of the lot (in $100's) .Regression analysis of the data yielded the following tables. $\begin{array}{|c|c|c|c|c|}\hline \text { Souros } & \text { df } & \text { SS } & \text { MS } & F \\\hline \text { Regresssumm } & 1 & 9.858769 & 9.85876 & 12.22345 \\\hline \text { Retidual } & 11 & 8.872 & 0.806545 & \\\hline \text { Total } & 12 & 78.73077 & &\\\hline\end{array}$
$$\begin{array} { | c | } \hline S _ { 8 } = 0.898 \\\hline r ^ { 2 } = 0.526341 \\\hline\end{array}$$ The correlation coefficient between Louis's variables is ________________.

A) -0.73
B) 0.73
C) 0.28
D) -0.28
E) 0.00