· BMO
Question and solution corrections
Corrected answers, options or explanations in 6 existing practice questions. Affected fixed papers use new versions; historical attempts remain intact. No questions added.
Question-bank update history
Weekly new questions enter topic practice only, not fixed mocks. Corrections use separate versions and preserve past attempts.
· BMO
Practice-bank data baseline
Existing reviewed practice content moved to data files. No questions added and no mocks changed.