The diagram shows the change $x$ in the length of a thin uniform wire caused by the application of stress $F$ at two different temperatures $T_1$ and $T_2$. The variations shown suggest that
  • A${T_1} > {T_2}$
  • B${T_1} < {T_2}$
  • C${T_1} = {T_2}$
  • D
    None of these
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