Comprehension Passage
The following table presents data about academic performance of students showing pass percentage (%) and ratio of male to female among passed and failed students of six different colleges A-F in a city. Based on the data in the table, answer the questions:
College-wise Academic Performance of Students
| College | Pass percentage | Ratio of Male to Female in pass students | Ratio of Male to Female in fail students |
| A | 40% | 12 ∶ 13 | 12 ∶ 5 |
| B | 55% | 5 ∶ 3 | 11 ∶ 14 |
| C | 70% | 7 ∶ 5 | 5 ∶ 3 |
| D | 45% | 4 ∶ 1 | 7 ∶ 3 |
| E | 50% | 2 ∶ 1 | 1 ∶ 2 |
| F | 37.50% | 3 ∶ 2 | 2 ∶ 1 |
If the number of students who have passed from B and C are equal, then what is the ratio between the number of failed students from B and C, respectively?
1
13 ∶ 23
2
23 ∶ 13
3
11 ∶ 21
4
21 ∶ 11