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:
| Reference | Author | Section Size | Violins | Violas | Celli | Basses |
| --- | --- | --- | --- | --- | --- | --- |
| "Arranged By Nelson Riddle" | Nelson Riddle | 12 players | 8.0 | 2.0 | 2.0 | 0.0 |
| "Arranged By Nelson Riddle" | Nelson Riddle | 15 players | 9.0 | 3.0 | 3.0 | 0.0 |
| "Arranged By Nelson Riddle" | Nelson Riddle | 16 players | 10.0 | 3.0 | 3.0 | 0.0 |
| "Arranged By Nelson Riddle" | Nelson Riddle | 20 players | 12.0 | 4.0 | 4.0 | 0.0 |
| "Arranged By Nelson Riddle" | Nelson Riddle | 30 players | 18.0 | 6.0 | 6.0 | 0.0 |
| "The Contemporary Arranger" | Don Sebesky | 9 players | 7.0 | 0.0 | 2.0 | 0.0 |
| "The Contemporary Arranger" | Don Sebesky | 12 players | 8.0 | 2.0 | 2.0 | 0.0 |
| "The Contemporary Arranger" | Don Sebesky | 16 players | 12.0 | 0.0 | 4.0 | 0.0 |
Question:
How many cellos are suggested in the reference with section size for 20 players?
Answer:
4.0