- AStudents who did not attend coaching classes all passed.
- BCoaching classes should be banned immediately.
- CEvery student who attended coaching classes failed the examination.
- DAttending coaching classes alone does not guarantee success in the examination.
Step-by-Step Solution
Since many coached students still failed, coaching by itself does not ensure success. The other options overstate ('every', 'all') or draw an extreme action not supported by the statement.
Answer: D) Attending coaching classes alone does not guarantee success in the examination.