If the sequence {an} is defined by \begin{align*}a_1 &= 2,\\ a_{n+1} &= a_n + 2n\qquad (n\geq 1),\end{align*} then a100 equals<spanclass=′latex−bold′>(A)</span>9900<spanclass=′latex−bold′>(B)</span>9902<spanclass=′latex−bold′>(C)</span>9904<spanclass=′latex−bold′>(D)</span>10100<spanclass=′latex−bold′>(E)</span>10102