The table below represents the closing prices of stock $ A B C $ for the last five days. Using your calculator, what is the equation of Jinear regression that fits these data?
\begin{tabular}{|c|c|}
\hline Day & Value \
\hline 1 & $ 20.71 $ \
\hline 2 & $ 19.69 $ \
\hline 3 & $ 19.61 $ \
\hline 4 & $ 19.64 $ \
\hline 5 & $ 19.26 $ \
\hline
\end{tabular}
A. $ y=-0.311 x+19.213 $
B. $ y=.289 x+21.459 $
C. $ y=-0.297 x+20.671 $
D. $ y=-0.272 x+22.319 $

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