Four uniform wires of the same material are stretched by the same force. The dimensions of wire are as given below. The one which has the minimum elongation has

  • A

    radius $3\ mm$, length $3\ m$

  • B

    radius $0.5\  mm$, length $0.5\ m$

  • C

    radins $2\ mm$, length $2\ m$

  • D

    radius $3\ mm$, length $2\ m$

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  • [JEE MAIN 2024]

In steel, the Young's modulus and the strain at the breaking point are $2 \times {10^{11}}\,N{m^{ - 2}}$ and $0.15$ respectively. The stress at the breaking point for steel is therefore