A=的特征值为0,2,则的特征值为( )。\n \n \n \n \n \n \n

\n \n \n \n A.\n 2,2; \n

\n \n

\n \n \n \n B.\n –2,-2; \n

\n \n

\n \n \n \n C.\n 0,0; \n

\n \n

\n \n \n \n D.\n –4,-4;\n