In a sample of Christ college students, 30 percent are third year students and 90 percent are not second-year students. What fraction of those students who are not third-year students are second-year students? Pick:
A) 3 / 4  B) 2 / 3  C) 4 / 7  D) 1 / 2  E) 1 / 7

Rationale: = 10 / 70 . = 1 / 7 my answer is e too
Answer: E