The correct matching of Prime Ministers and their tenures is:
\begin{itemize}
\item A. Morarji Desai: April 1977 - January 1979
\item B. Chandra Shekhar: November 1990 - June 1991
\item C. V.P. Singh: December 1989 - November 1990
\item D. Rajiv Gandhi: October 1984 - December 1989
\end{itemize}
The options provided in the question seem to have errors in the tenure details. The correct answer is based on the historical knowledge of the tenure of the respective Prime Ministers.
Historical Context: The tenures of these Prime Ministers were marked by significant political events, including Chandra Shekhar's brief tenure during a time of economic crisis, V.P. Singh's tenure during the implementation of the Mandal Commission report, and Rajiv Gandhi's leadership following Indira Gandhi's assassination.