Stainless steel is an alloy of iron with

  • A

    $8\% Cr, 50\% Mn$ 

  • B

    $10\% Ni$,  $2\% Mn$

  • C

    $2\% Cr$,  $3\% C$

  • D

    $12\% Cr$,  $1\% N$

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