设A为5*4矩阵,若Ax=β有解,η1,η2是其两个特解,Ax=0的基础解系是X1,X2,则
(A)Ax=β的通解是k1X1+K2X2+1/2(η1-η2);
(B)Ax=β的通解是k1(X1+X2)+k2(X1-X2)+(2η1-η2);
(C)Ax=0的通解是k1X1+k2(η1+η2);
(D)Ax=0的通解是k1(X1-X2)+k2(η1-X1)