A At \( x = \frac{\pi}{6} \) , there is a minimum which is \( \frac{3}{2} \)
B At \( x = \frac{\pi}{6} \) , there is a maximum which is \( \frac{3}{2} \)
C At \( x = \frac{\pi}{6} \) , there is a maximum which is \( \frac{1+\sqrt{3}}{2} \)
D At \( x = \frac{\pi}{6} \) , there is a minimum which is \( 3 \)
E At \( x = \frac{\pi}{6} \) , there is a minimum which is \( \frac{1}{2} \)