Solve this following

Question:

If matrices $\mathrm{A}$ and $\mathrm{B}$ anticommute then

A. $\mathrm{AB}=\mathrm{BA}$

B. $\mathrm{AB}=-\mathrm{BA}$

C. $(A B)=\left(B A^{-1}\right)$

D. None of these

Solution:

If $A$ and $B$ anticommute then $A B=-B A$

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