设alpha，beta皆为3维列向量，下列结论错误的是()。A. alpha^T beta = beta^T alphaB. alpha beta^T = beta alpha^TC. alpha beta cdot alpha beta^T = (beta^T alpha) (alpha beta^T)D. 若alpha beta^T = 0，则alpha = 0或beta = 0

设$\alpha$，$\beta$皆为3维列向量，下列结论错误的是()。

A. $\alpha^T \beta = \beta^T \alpha$

B. $\alpha \beta^T = \beta \alpha^T$

C. $\alpha \beta \cdot \alpha \beta^T = (\beta^T \alpha) (\alpha \beta^T)$

D. 若$\alpha \beta^T = 0$，则$\alpha = 0$或$\beta = 0$