A teacher throws a sphere vertically upward, which returns, after a few seconds, to the launch point. He then lists on a board all the possibilities for kinematic quantities.

\begin{center}
\begin{tabular}{ | c | c | c | }
\hline
Kinematic quantity & Magnitude & Direction \\
\hline
\multirow{3}{*}{Velocity} & \multirow{2}{*}{$v \neq 0$} & Upward \\
\cline { 3 - 3 }
 &  & Downward \\
\cline { 2 - 3 }
 & $v = 0$ & Undefined* \\
\hline
\multirow{3}{*}{Acceleration} & \multirow{2}{*}{$a \neq 0$} & Upward \\
\cline { 2 - 3 }
 &  & Downward \\
\cline { 2 - 3 }
 & $a = 0$ & Undefined* \\
\hline
\end{tabular}
\end{center}

*Quantities with zero magnitude do not have a defined direction.\\
He asks students to analyze the kinematic quantities at the instant when the sphere reaches maximum height, choosing a combination for the magnitudes and directions of velocity and acceleration.\\
The choice that corresponds to the correct combination is\\
(A) $v = 0$ and $a \neq 0$ upward.\\
(B) $v \neq 0$ upward and $a = 0$.\\
(C) $v = 0$ and $a \neq 0$ downward.\\
(D) $v \neq 0$ upward and $a \neq 0$ upward.\\
(E) $v \neq 0$ downward and $a \neq 0$ downward.