Refer to the following arrangement of letters, numbers and symbols to answer the question that follows.

(Left) R Z Ω B % 7 K & 4 D 6 Σ S Q 2 @ M 8 ∞ E (Right)

Select the option that can replace the question mark (?) in the following series.

RΩE   B7∞   K48   DΣM   ?