If A = \(\begin{bmatrix}3 & 4\\6 & 8 \end{bmatrix}\), then what can be said about 18 \( { A }^{ -1 } \)?

18\( { A }^{ -1 } \) = 9 (adj A) 18\( { A }^{ -1 } \) = 2 (adj A) 18\( { A }^{ -1 } \) = 18 (adj A) None of these

None of these

A = \(\begin{bmatrix}3 & 4\\6 & 8 \end{bmatrix}\), |A| = 0 So, \( { A }^{ -1 } \) does not exist