The histogram shows the number of prizes won by different numbers of students at a sports competition. Which of the following statements is correct regarding the number of students and the number of prizes won?

A histogram titled Prizes Won is shown. The horizontal axis is labeled Number of Prizes with bins 0 to 3, 4 to 7, 8 to 11, and 12 to 15. The vertical axis labeled Students with values from 0 to 10 at intervals of 1. The first bin goes to 3, the second goes to 6, the third goes to 1, and the last goes to 9.

Six students won 4, 5, 6, or 7 prizes.
A total of 9 students won all the prizes.
Six prizes were won by 4, 5, 6, or 7 students.
A total of 9 prizes were won by all the students.