`f_n(x)=(underset(r=1)overset(n)Sigmasin(rx))/(underset(r=1)overset(n)Sigmacos(rx))` then
Match List-I with List-II and select the correct answer using the code given below the list.
A. P`to`1 , Q`to`4 , R`to`3 , S`to` 2
B. P`to`2 , Q`to`4 , R`to`3 , S`to` 1
C. P`to`4 , Q`to`1 , R`to`3 , S`to` 2
D. P`to`2 , Q`to`1 , R`to`5 , S`to` 3