There Are 28,446 Undergraduate Students Enrolled at a Certain University

There are 28,446 undergraduate students enrolled at a certain university. The age distribut is as follows:
$\begin{array}{cc}\hline \text { Age Range } & \text { Number } \\\hline 13-14 & 5 \\15-17 & 434 \\18-22 & 12,057 \\23-30 & 9256 \\31 \text { and up } & 6694 \\\hline \text { Total } & 28,446\end{array}$
What is the probability that a student is less than 18 years old? n

A) 0.235
B) 0.00018
C) 0.0154
D) 0.0153