Select the option that is related to the third term in the same way as the second term is related to the first term and the sixth term is related to the fifth term

Select the option that is related to the third term in the same way as the second term is related to the first term and the sixth term is related to the fifth term.

 1/87:1/30::1/65:?::1/63:1/36

A.  1/36

B.  1/22

C.  1/32

D. 1/42

Sol:

Pattern follows here is: 8²-7²+8+7=30, 6²-3²+6+3=36

Similarly required term 6²-5²+6+5=22