Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| D 39 √ | D 40 √ | D 41 √ | D 42 √ | D 43 √ | D 44 √ | D 45 √ | D 46 √ | D 47 √ | D 48 √ |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| D 18 | D 17 | D 16 | D 15 | D 14 | D 13 | D 12 | D 11 | D 10 | D 9 |
| D 19 | D 20 | D 21 | D 22 | D 23 | D 24 | D 25 | D 26 | D 27 | D 28 |
| D 38 | D 37 | D 36 | D 35 | D 34 | D 33 | D 32 | D 31 | D 30 | D 29 |
| D 39 √ | D 40 √ | D 41 √ | D 42 √ | D 43 √ | D 44 √ | D 45 √ | D 46 √ | D 47 √ | D 48 √ |
| Majority→ | Majority→ | Majority→ | Majority→ | Majority→ | Majority→ | Majority→ | Majority→ | Majority→ | D 49 O |
| R 41 O | R 42 + | R 43 + | R 44 + | R 45 + | R 46 + | R 47 + | D 51 O | D 50 O | D 49 O |
| R 40 O | R 39 O | R 38 O | R 37 O | R 36 O | R 35 O | R 34 √ | R 33 √ | R 32 √ | R 31 √ |
| R 21 | R 22 | R 23 | R 24 √ | R 25 √ | R 26 √ | R 27 √ | R 28 √ | R 29 √ | R 30 √ |
| R 20 | R 19 | R 18 | R 17 | R 16 | R 15 | R 14 | R 13 | R 12 | R 11 |
| R 1 | R 2 | R 3 | R 4 | R 5 | R 6 | R 7 | R 8 | R 9 | R 10 |
Question:
What's the D 42 √ when D 43 √ is r 5?
Answer:
R 4