The number of ways of dividing 15 men and 15 women into 15 couples each consisting of a man and woman is

Question

$\begin{array}{1 1}(A)\;1240\\(B)\;1840\\(C)\;1820\\(D)\;2005\end{array}$

Comments

If we take a small example of this type of question by taking 2men and 2 women, then by this method answer will be 2² + 1²=5
But how we can get 5 ways of forming team by 2 men and 2women