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# When an uncharged glass rod is rubbed with an uncharged silk cloth, the rod becomes positively charged, while the silk cloth becomes negatively charged.The silk cloth and glass rod get charged because of

$\begin{array}{1 1}(A)\;Friction \\ (B)\;insulation \\(C)\;induction \\(D)\; conduction \end{array}$

Can you answer this question?