AHSME 1961 Problem 26

For a given arithmetic series the sum of the first $50$ terms is $200$, and the sum of the next $50$ terms is $2700$. The first term in the series is: $\textbf{(A)}\ -1221 \textbf{(B)}\ -21.5 \textbf{(C)}\ -20.5 \textbf{(D)}\ 3 \textbf{(E)}\ 3.5$