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设λo是n阶矩阵A的特征值，且齐次线性方程组（λoE－A)x＝0的基础解系为η1，η2，则A的属于λo的全部特征

设λo是n阶矩阵A的特征值，且齐次线性方程组(λoE－A)x＝0的基础解系为η1，η2，则A的属于λo的全部特征向量为()．

A．η1和η2

B．η1或η2

C．c1η1＋c2η2(c1，c2全不为零)

D．c1η1＋c2η2(c1,/sub＞，c2不全为零)

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