A. Critics claimed Tuesday's disaster could have been averted. B. The disaster involved a local commuter train and a high-speed express. C. Critics noted that the long-delayed inquiry into the Southall accident got under way just two weeks ago. D. Critics wondered if a quicker review might have yielded measures to prevent the latest wreck.

Answer: Claiming Tuesday's disaster involving a local commuter train and a high-speed express could have been averted, critics noted that the long-delayed inquiry into the Southall accident got under way just two weeks ago and wondered if a quicker review might have yielded measures to prevent the latest wreck.