The Data in the Following Table Reflect the Amount of Time

Multiple Choice

The data in the following table reflect the amount of time 40 students in a section of Statistics 101 spend on homework each day. Find the value of the missing entry.
$\begin{array}{c|c}\begin{array}{c}\text { Homework time } \\\text { (minutes) }\end{array} & \begin{array}{c}\text { Relative } \\\text { frequency }\end{array} \\\hline 0-14 & 0.05 \\15-29 & 0.10 \\30-44 & 0.25 \\45-59 & \\60-74 & 0.15 \\75-89 & 0.05\end{array}$

A) 16
B) 40
C) 0.40
D) The value cannot be determined from the given data.