A \( x = (2n+1)\frac{\pi}{8} \)
B \( x = (n+1)\frac{\pi}{8} \)
C \( x = (2n+1)\frac{\pi}{6} \)
D \( x = \frac{2n\pi}{3} \)
E \( x = (2n-1)\frac{\pi}{6} \)
Correct Answer: Option A
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