Which of the following is a compound proposition?
\[
\text{A. Unless it rains in time, harvest will not be good.}
\]
\[
\text{B. Only meritorious students will be considered for scholarship.}
\]
\[
\text{C. Be neither a borrower nor a lender.}
\]
\[
\text{D. Two triangles are formed if a square is divided diagonally.}
\]
\[
\text{E. Not all good speakers are good writers.}
\]