Select the option that will come in place of the question mark (?) in the following word cluster series: VMF, SIO, PEX, MAG, JWP, ?

Which of the following letter-number clusters will come in place of the question mark (?) to logically complete the given series? GLO163, RWZ145, CHK127, NSV109, ?

Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete? HDP 1, JEM -2, LFJ 4, NGG -8, ?