Select the option that represents the letters that, when sequentially placed from left to right in the blanks, will complete the letter series. s _ t r m _ _ _ h _ _ m m k _ h t _ _ m k |
h m k s t r s m r h m k s r t s m m h k m s t r s m m h m k s t r s r m |
h m k s t r s r m |
s h t r m m k / s h t r m m k / s h t r m m k h m k s t r s r m |