If S. D. of \( x_{1}, x_{2}, x_{3} \ldots x_{4} \) is 3 then S. D o...

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If S. D. of \( x_{1}, x_{2}, x_{3} \ldots x_{4} \) is 3 then S. D of \( -4 x_{1},-4 x_{2} \ldots \ldots \ldots . .4 x_{n} \) is
\( \mathrm{P} \)
W
(1) \( -12 \)
(2) 12
(3) \( -6 \)
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