James states that the resistance of a copper wire can be increased making it narrower and longer. Andrew disagrees and argues that resistance can be increased by heating the wire. Which one, if either, is correct, and why? a. James, because the conductivity of a copper wire does not increase when it is hammered. b. Andrew, because the conductivity of the wire decreases when it is heated. c. None of these options d. Andrew, because the conductivity of the wire increases when it is heated. e. Both are correct because the conductivity of a conductor is independent of its shape but decreases with increase in temperature. f. James, because the conductivity of a wire is directly proportional to its area and inversely proportional to its length.

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