Given the Contingency Table Shown Here, Find P(B) $\quad$

Multiple Choice

Given the contingency table shown here, find P(B) . $\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\text { Age }$
$\begin{array} {| l | c | c | c| } \hline\text { Absences } & \text { Under } 25 ( A ) & 25 \text { or More } \left( A ^ { \prime } \right) & \text { Row Total } \\\hline \text { Under } 2 \text { days } ( B ) & 50 & 40 & 90 \\\hline 2 \text { or more days } \left( B ^ { \prime } \right) & 30 & 80 & 110 \\\hline \text { Column Total } & 80 & 120 & 200\\\hline\end{array}$

A) .85
B) .25
C) .45
D) .22