A steel tape gives correct measurement at $20^o C$. A piece of wood is being measured with the steel tape at $0^o C$. The reading is $25 \,\,cm$ on the tape, the real length of the given piece of wood must be:

  • A

    $25\,\, cm$

  • B

    $<25\,\, cm$

  • C

    $>25\,\, cm$

  • D

    can not say

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