Complete the Contingency Table and Use It to Solve the Problem

Multiple Choice

Complete the contingency table and use it to solve the problem.
-The partially filled contingency table gives the frequencies of the data on age (in years) and sex from the residents of a retirement home.

What is the relative frequency for females in the age group 60-69?

A) $\frac { 3 } { 5 }$
B) $\frac { 1 } { 4 }$
C) $\frac { 13 } { 40 }$
D) $\frac { 3 } { 10 }$