This section contains 6 passages. Based upon each of the passage 3 multiple choice questions have to be answered. Each of these questions has four choices (a), (b), (c) and (d) out of which ONLY ONE is correct.

If $A$ is symmetric and $B$ skew-symmetric matrix and $A + B$ is non- singular and $C=(A+B{)}^{-1}(A-B)$.