Five friends, Lubna, Usman, Priya, Rakib and Faisal, are compared by age. No two are equal. Usman is older than Priya. Usman is younger than Lubna. Lubna is older than Rakib. Faisal is younger than Priya. Which of the following must be true?
Correct answer D. Usman is older than Faisal.
Explanation
Linking the clues gives Usman > Priya > Faisal in age, so Usman is older than Faisal. The other statements fit some arrangements but not all of them.
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