MathematicsEasy244×since 2002Q4614Let A and B be two 3×33 \times 33×3 non-zero real matrices such that AB is a zero matrix. ThenAthe system of linear equations AX=0A X=0AX=0 has a unique solutionBthe system of linear equations AX=0A X=0AX=0 has infinitely many solutionsCB is an invertible matrixDadj(A)\operatorname{adj}(\mathrm{A})adj(A) is an invertible matrixCheck answerSkip