For two vectors \( \mathbf{A} \) and \( \mathbf{B},|\mathbf{A}+\mat...

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For two vectors \( \mathbf{A} \) and \( \mathbf{B},|\mathbf{A}+\mathbf{B}|=|\mathbf{A}-\mathbf{B}| \) is always true when
(a) \( |\mathbf{A}|=|\mathbf{B}| \neq 0 \)
(b) \( \mid \mathbf{A} \perp \mathbf{B} \)
(c) \( |\mathbf{A}|=|\mathbf{B}| \neq 0 \) and A and B are parallel or anti parallel
(d) None of these
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