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【单选题】
设η1，η2，η3均为线性方程组AX=B的解向量，若ξ1=2η1-aη2+3bη3，ξ2=2aη1-bη2+η3，ξ3=3bη1-3aη2+4η3也是AX=B的解，则a，b应满足( )．
A.
a=1，b=1
B.
a=0，b=1
C.
a=1，b=0
D.
a=0，b=-1
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参考答案：
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【单选题】Who was the witness to prove Mr. Rochester's wife was alive?
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C.
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