Question: y = ( e ^ x + 1 / e ^ x ) / ( e ^ x - 1 / e ^ x )

y=(e^x+1/e^x)/(e^x -1/e^x)
Option A
4/(e^x+1/e^x)^2
Option B
1/(e^x+1/e^x)^2
Option C
1/e^x/(e^x+1/e^x)^2
Option D
e^x/(e^x+1/e^x)^2

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