Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
G_CT_GP_T_GPC_D_PC_D

A

P, D, D, C, G, T, T

B

P, D, C, D, T, G, T

C

P, T, T, D, D, C, G

D

P, C, T, D, G, T, D