The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied ?

  • A

    Length $50\,cm$ and diameter $0.5\,mm$

  • B

    Length $100\,cm$ and diameter $1\,mm$

  • C

    Length $200\,cm$ and diameter $2\,mm$

  • D

    Length $300\,cm$ and diameter $3\,mm$

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