What is the composition of the alloy that exhibits the property of shape memory?

  • A
    $45\% \, Ti$ and $55\% \, Ni$
  • B
    $8\% \, Ni, 18\% \, Cr$ and remaining $Fe$
  • C
    $67\% \, \text{to} \, 70\% \, Ni$ and remaining $Cu$
  • D
    $60\% \, Ni$ and $40\% \, Cr$

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