If $n, \mathrm{~K} \in \mathrm{~N}$ such that $n \neq 3 \mathrm{~K}$, then $(\sqrt{3}+i)^{2 n}+(\sqrt{3}-i)^{2 n}=$

• A

  $(-1)^n 2^{2 n+1}$
• B

  $(-1)^{n+1} 2^{2 n+1}$
• Correct answer
  C

  $(-1)^{n+1} 2^{2 n}$
• D

  $(-1)^{n+1} 2^n$

Hence, the correct answer is option: 'C'.