When a student in Section A who scored 100 marks in a subject is exchanged for a student in Section B who scored 0 marks, the average marks of the Section A falls by 4, while that of Section B increases by 5. Which of the following statements is true?
1
A has the same strength as B
2
A has 5 more students than B
3
B has 5 more students than A
4
The relative strengths of the classes cannot be assessed from the data