What Is the Attack Rate (Case-Fatality Rate) from Influenza During

What is the attack rate (case-fatality rate) from influenza during the 2016 season in the young age group at Minas Tirith? Use the following table to answer the question. Number of Residents,Diagnosed Cases,and Deaths From Influenza by Age
$$\begin{array} { | l | l | l | l | } \hline \text { Age group } & \begin{array} { l } \text { No. of residents } \\\text { during } 2016 \text { season }\end{array} & \begin{array} { l } \text { No. of diagnosed } \\\text { cases from influenza } \\\text { during } 2016 \text { season }\end{array} & \begin{array} { l } \text { No. of deaths from } \\\text { influenza during } 2016 \\\text { season }\end{array} \\\hline \text { Young } & 20,000 & 3,000 & 300 \\\hline \text { Old } & 10,000 & 1,000 & 500 \\\hline\end{array}$$

A) 15%
B) 5%
C) 1.5%
D) 10%
E) 50%