Explanation:

- To decode the pattern, compare the positions in the alphabet.

- For 'SLID' to 'TMHC':

- S(19) -> T(20) : +1

- L(12) -> M(13) : +1

- I(9) -> H(8) : -1

- D(4) -> C(3) : -1

- For 'LIST' to 'MJRS':

- L(12) -> M(13) : +1

- I(9) -> J(10) : +1

- S(19) -> R(18) : -1

- T(20) -> S(19) : -1

- Pattern: First two letters +1, last two letters -1.

- For 'PILE':

- P(16) -> Q(17)

- I(9) -> J(10)

- L(12) -> K(11)

- E(5) -> D(4)

- Option:4 - QJKD is the correct answer.