In the following sequence of reactions, how many hydroxyl groups (-OH) are present in the final product (D)?
\begin{matrix} \stackrel{ \Delta}{\longrightarrow} &(A)& \stackrel{OsO_4}{\longrightarrow} & (B) \\ \\ \\ \stackrel{HIO_4}{\longrightarrow} & (C) & \overset{LiAIH_4}{\underset{\text{(excess)}}{\xrightarrow {\hspace{2 cm}} }} & (D) \end{matrix}
\begin{matrix} \overset{\Delta}{\underset{\text{Diel’sAlder reaction}}{\xrightarrow {\hspace{2 cm}} }} \\\\\\\\\\ \end{matrix}
\begin{matrix} \overset{HIO_4}{\underset{\text{(1, 2 glycol splitting)}}{\xrightarrow {\hspace{2 cm}} }} \\\\\\\\\\ \end{matrix} \begin{matrix} \overset{ LiAIH_4}{\xrightarrow {\hspace{2 cm}} } \\\\\\\\\\ \end{matrix}