Find the Mode(s)for the Given Sample Data Find the Mode of the Blood Types

Find the mode(s) for the given sample data.
-The blood types for 30 people who agreed to participate in a medical study were as follows.
$\begin{array} { l l l l l l l l l l } \text { O } & \text { A } & \text { A } & \text { O } & \text { A } & \text { AB } & \text { O } & \text { B } & \text { A } & \text { O } \\\text { A } & \text { O } & \text { A } & \text { B } & \text { O } & \text { O } & \text { O } & \text { AB } & \text { A } & \text { A } \\\text { A } & \text { B } & \text { O } & \text { A } & \text { A } & \text { O } & \text { O } & \text { B } & \text { O } & \text { O }\end{array}$

Find the mode of the blood types.

A) O , A
B) A
C) 13
D) O