B, the 2nd letter, is encoded as 23 (25 - 2 = 23).
R, the 18th letter, is encoded as 18.
E, the 5th letter, is encoded as 5.
A, the 1st letter, is encoded as 1.
K, the 11th letter, is encoded as 11.
This indicates the first letter is encoded as (25 - its alphabet position), while subsequent letters retain their original positions.
Applying this to STUDY:
S, the 19th letter, would be 25 - 19 = 6. However, this contradicts all provided options, suggesting all letters might be unchanged.
Upon reevaluation, if BREAK is directly represented by its alphabetical positions:
B = 2 → 2
R = 18 → 18
E = 5 → 5
A = 1 → 1
K = 11 → 11
Therefore, the encoding likely uses direct alphabetical positions: