In a competitive exam, 200 candidates took a test. Sarah scored in the 80th percentile. Assuming scores are unique, how many candidates scored lower than Sarah?

✓ Correct Answer: Option C

The 80th percentile means 80% of the candidates scored at or below Sarah's score. (0.80 * 200) = 160 candidates. Since scores are unique, 159 candidates scored strictly lower than Sarah, and Sarah is the 160th.