Question

Choose the answer choice that can replace the '?' in the series.

c x, f u, i r, ? , o l, r i

• A. l o
• B. m n
• C. n o
• D. o p
• E. o r

Answer 1

The correct option is A l o

First letter of each term follows gap of two letters and second letter moves two step backward in each term.
i$\to$l
r$\to$o