Given the Contingency Table Shown Here, What Is the Probability $\quad$

Given the contingency table shown here, what is the probability that a mother in the study smoked during pregnancy? $\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\text { Smoked during }$$\quad$ $\text { Didn't Smoke during }$

$\begin{array}{|c|r|r|r|}\hline \text { Mother's Education } & \text { Pregnancy } & \text { Pregnancy } & \text { Row Total } \\\hline\text { Below High School } &393 & 640 &1,033\\\hline \text { High School }&560 & 1,370&1,930 \\\hline \text { Some College }&121 & 635 &756\\\hline\text { College Degree} &48 & 550 &598\\\hline \text { Col Total } &1,122 & 3,209&4,331\\\hline\end{array}$

A) .2591
B) .3174
C) .5000
D) .7401