Mathematics Matrices 1 Mark Appeared in: 2026 (3 sets) For a square matrix $A$, $(3A)^{-1} =$ (A) $3A^{-1}$ (B) $9A^{-1}$ (C) $\frac{1}{3}A^{-1}$ (D) $\frac{1}{9}A^{-1}$