The numbers of people who visited two restaurants on several days throughout a week is listed in the table below. What is closest to the positive difference between the mean number of people who visited Restaurant A and the mean number of people who visited Restaurant B during the entire week?

$$ \begin{array}{|c|c|c|c|c|c|c|c|} \hline & \text{Mon.} & \text{Tue.} & \text{Wed.} & \text{Thu.} & \text{Fri.} & \text{Sat.} & \text{Sun.} \\ \hline \text{Restaurant A} & 123 & 141 & 98 & 65 & 215 & 265 & 199 \\ \hline \text{Restaurant B} & 100 & 115 & 92 & 94 & 85 & 108 & 106 \\ \hline \end{array} $$

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Find the mean of both data sets:

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$$ \text{mean}= \frac{123+141+98+65+215+265+199}{7} $$ $$ = \frac{1106}{7} $$ $$ =158 $$

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$$ \text{mean}= \frac{100+115+92+94+85+108+106}{7} $$ $$ = \frac{700}{7} $$ $$ =100 $$

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Positive difference:

$$ 158-100 $$ $$ = \boxed{58} $$