On a race track a maximum of 5 horses can race together at a time. There are a total of 25 horses. There is no way of timing the races. What is the minimum number W of races we need to conduct to get the top 3 fastest horses? Select: A) 5 B) 7 C) 8 D) 10 E) 11

Rationale: "w = 7 is the correct answer . good solution buneul . b"
Answer: B