Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
L _ _ R _ T _ M P _ S _ _ M P _ S T

A

M, P, S, L, R, T, L, R

B

L, R, T, S, P, P, S, T

C

L, M, R, S, L, M, P, R

D

R, P, L, M, S, L, S, T