The largest interval lying in [-(pi)/(2)...

The largest interval lying in `[-(pi)/(2),(pi)/(2)]` for which the function :
`f(x)=[4^(-x^2)+cos^(-1)((x)/(2)-1)+log(cosx)]` is defined is :

A

`[0,pi/2)`

B

`[0,pi)`

C

`(-pi/2, pi/2)`

D

`[-pi/4,pi/2)`

Verified by Experts

The correct Answer is:

A

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