GCE Mathematics 1989 Question 28

For a class of 30 students, the scores in a Mathematics test out of 10 marks were as follows:
4, 5, 7, 2, 3, 6, 5, 5, 8, 9,
5, 4, 2, 3, 7, 9, 8, 7, 7, 7,
3, 4, 5, 5, 2, 3, 6, 7, 7, 2.
What is the mode of the scores?

1. A.3
2. B.4
3. C.5
4. D.6
5. E.7