यदि $a^{2}+b^{2}+c^{2}=2(a-b-c)-3$ है,तो $(a-b+c)$ का मान ज्ञात कीजिए।

  • A
    $-1$
  • B
    $3$
  • C
    $1$
  • D
    $-2$

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