Which row in the table describes both a valid and reliable test for measuring the speed of an athlete?
\begin{align*}
\begin{array}{l}
\rule{0pt}{2.5ex} \ \rule[-1ex]{0pt}{0pt}& \\
\textbf{}\ \rule[-1ex]{0pt}{0pt}& \\
\rule{0pt}{2.5ex} \textbf{A.}\ \rule[-1ex]{0pt}{0pt}&\\
\textbf{}\ \rule[-1ex]{0pt}{0pt}& \\
\rule{0pt}{2.5ex} \textbf{B.} \ \rule[-1ex]{0pt}{0pt}&\\
\textbf{} \ \rule[-1ex]{0pt}{0pt}&\\
\rule{0pt}{2.5ex} \textbf{C.} \ \rule[-1ex]{0pt}{0pt}& \\
\textbf{} \ \rule[-1ex]{0pt}{0pt}& \\
\rule{0pt}{2.5ex} \rule{0pt}{2.5ex} \textbf{D.} \ \rule[-1ex]{0pt}{0pt}& \\
\textbf{}\ \rule[-1ex]{0pt}{0pt}& \\
\end{array}
\begin{array}{|l|l|}
\hline
\rule{0pt}{2.5ex} \ \ \ \ \ Athlete \rule[-1ex]{0pt}{0pt} &\ \ \ \ \ \ \ Test \rule[-1ex]{0pt}{0pt} & \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ Result \\
\hline
\rule{0pt}{2.5ex}\text{100 m sprinter} & \text{Reaction time} & \text{There are changes in the athlete’s sprint} \\
\text{} &\text{to starter } &\text{times.} \\
\hline
\rule{0pt}{2.5ex}\text{100 m sprinter} &\text{Reaction time} & \text{Results are consistent across multiple} \\
\text{} & \text{to starter} & \text{training sessions.} \\
\hline
\rule{0pt}{2.5ex} \text{Midfielder in } & \text{40 m sprint } & \text{There are changes in the athlete’s sprint} \\
\text{soccer } &\text{choice} & \text{times.} \\
\hline
\rule{0pt}{2.5ex}\text{Midfielder in } & \text{40 m sprint } & \text{Results are consistent across multiple} \\
\text{soccer } &\text{choice} & \text{training sessions. } \\
\hline
\end{array}
\end{align*}