The diagram shows a magic square in which the sums of
the numbers in any row, column or diagonal are equal. What
is the value of n?<spanclass=′latex−bold′>(A)</span>3<spanclass=′latex−bold′>(B)</span>6<spanclass=′latex−bold′>(C)</span>7<spanclass=′latex−bold′>(D)</span>10<spanclass=′latex−bold′>(E)</span>11