In preventing edge chipping, how many of the following statements are correct?

• A. ALL statements are correct
• B. ONLY ONE statement is correct
• C. TWO statements are correct
• D. THREE statements are correct

Answer: (D)

This question tests handling a self-referential count of how many statements among a group are true. Each statement asserts a different count: all four, exactly one, exactly two, or exactly three are correct.

Consider what happens if different counts were true. If all four were correct, that would demand four true statements, but the others specify counts of 1, 2, or 3, which would conflict—impossible. If three statements were correct, the remaining one would determine the actual count, but that would in turn contradict the counts claimed by the other true statements, leading to inconsistency. The only scenario that holds together without conflict is that exactly one statement is true. In that case, the statement that says only one statement is correct is the true one, and the other three—claiming all four, or two, or three statements—are false.

So the consistent solution is that exactly one statement is correct, and the true statement is the one describing that situation.