The number of alphabets between $A,F$ is $4,$ and same for $F,K.$
The number of alphabets between $L,P$ is $3,$ and same for $P,T.$
The number of alphabets between $A,L$ is $10,$ and same for $R,C.$
Using above pattern, we can get $C+3+1=G, G+3+1 = K.$
So, the correct answer is $(C).$