निम्नलिखित फलन का अवकलज ज्ञात कीजिए: $5 \sec x + 4 \cos x$.

  • A
    $5 \sec x \tan x - 4 \sin x$
  • B
    $5 \sec x \tan x + 4 \sin x$
  • C
    $5 \sec x \tan x - 4 \cos x$
  • D
    $5 \sec x \tan x + 4 \cos x$

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