The following table shows the number of cars rejected by the quality control department and the percentage of cars approved out of the total number of cars assembled by four machines A, B, C, and D.
| Machine | Number of cars rejected | Percentage of approved cars |
| A | 840 | 86 |
| B | 600 | 90 |
| C | 550 | 90 |
| D | 1000 | 80 |
How many cars assembled by machine C were approved?
1
4950
2
7560
3
5400
4
5160