The general solution of the equation \(\tan 3x + \cot (2x + \frac{\pi }{3}) = 0\) is:

• A. \(n\pi + \frac{\pi }{3},n \in z\)
• B. \(2n\pi \pm \frac{\pi }{6},n \in z\)
• C. \(2n\pi \pm \frac{\pi }{3},n \in z\)
• D. \(n\pi + \frac{5\pi }{6},n \in z\)