मान लीजिए $f : R \rightarrow R$ एक सतत फलन है जो सभी $x \in R$ के लिए $f(x) + f(x + k) = n$ को संतुष्ट करता है,जहाँ $k > 0$ और $n$ एक धनात्मक पूर्णांक है। यदि $I_{1} = \int_{0}^{4nk} f(x) dx$ और $I_{2} = \int_{-k}^{3k} f(x) dx$ है,तो:

  • A
    $I_{1} + 2I_{2} = 4nk$
  • B
    $I_{1} + 2I_{2} = 2nk$
  • C
    $I_{1} + nI_{2} = 4n^{2}k$
  • D
    $I_{1} + nI_{2} = 6n^{2}k$

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