What should come in place of the question mark (?) in the given series based on the English alphabetical order?
DGC HKG LOK PSO ?
AYXS
BTWS
CZYS
DUWS
AYXS
BTWS
CZYS
DUWS
Related Questions:
Select the option that is related to the fifth number in the same way as the second number is related to the first number and the fourth number is related to the third number.
8:14 :: 12:22 :: 21:?