When you shuffle your feet on a carpet on a dry day, you can accumulate a charge. The fact that you accumulate a charge means that the carpet is
A. an insulator, because if it weren't, the charge would immediately leave you.
B. a conductor, because conductors always have extra electrons.
C. an insulator, because only insulators can be charged by contact.
D. a conductor, because charge cannot leave an insulator and move to you.
Answer: A
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