MathematicsMedium244×since 2002Q4505If the matrix A = \left( {\matrix{ 0 & 2 \cr K & { - 1} \cr } } \right) satisfies A(A3+3I)=2IA({A^3} + 3I) = 2IA(A3+3I)=2I, then the value of K is :A12{1 \over 2}21B−-−12{1 \over 2}21C−-−1D1Check answerSkip