The following table gives the marks scored by 4 students in 4 unit tests of English. Read the table carefully and answer the question that follows.
| Name | Unit test 1 | Unit test 2 | Unit test 3 | Unit test 4 |
| Rani | 20 | 22 | 24 | 23 |
| Ravi | 22 | 18 | 24 | 20 |
| Raju | 24 | 22 | 20 | 24 |
| Rekha | 20 | 21 | 22 | 23 |
Whose average marks are the highest among the 4 students?
1
Rani
2
Ravi
3
Raju
4
Rekha