Integrating factor of the differential equation \( \frac{d y}{d x}+...

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Integrating factor of the differential equation \( \frac{d y}{d x}+y \tan x-\sec x=0 \) is:
P
(A) \( \cos x \)
(B) \( \sec x \)
W)
(C) \( e^{\cos x} \)
(D) \( e^{\text {sec } x} \)
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