If A=4sintheta+cos^2theta, then which o...

If `A=4sintheta+cos^2theta,` then which of the following is not true? (a) maximum value of `A is 5.` (b)minimum value of `A is -4` (c) maximum value of `A` occurs when `sintheta=1/2dot` (d) Minimum value of `A` occurs when maximum value of `sin theta`=1

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