यदि $A = [a\, b]$,$B = [-b\, -a]$ और $C = \begin{bmatrix} a \\ -a \end{bmatrix}$ है,तो सही कथन है

  • A
    $A = -B$
  • B
    $A + B = A - B$
  • C
    $AC = BC$
  • D
    $CA = CB$

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