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:
| Version | Fairing | CCBs | SRBs | Upper stage | Payload to LEO | Payload to GTO | Launches to date |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 401 | 4 m | 1.0 | – | SEC | 9,797kg | 4,750kg | 18.0 |
| 402 | 4 m | 1.0 | – | DEC | 12,500kg | – | 0.0 |
| 411 | 4 m | 1.0 | 1 | SEC | 12,150kg | 5,950kg | 3.0 |
| 412 | 4 m | 1.0 | 1 | DEC | – | – | 0.0 |
| 421 | 4 m | 1.0 | 2 | SEC | 14,067kg | 6,890kg | 3.0 |
| 431 | 4 m | 1.0 | 3 | SEC | 15,718kg | 7,700kg | 2.0 |
| 501 | 5.4 m | 1.0 | – | SEC | 8,123kg | 3,775kg | 4.0 |
| 502 | 5.4 m | 1.0 | – | DEC | – | – | 0.0 |
| 511 | 5.4 m | 1.0 | 1 | SEC | 10,986kg | 5,250kg | 0.0 |
| 512 | 5.4 m | 1.0 | 1 | DEC | – | – | 0.0 |
| 521 | 5.4 m | 1.0 | 2 | SEC | 13,490kg | 6,475kg | 2.0 |
| 522 | 5.4 m | 1.0 | 2 | DEC | – | – | 0.0 |
| 531 | 5.4 m | 1.0 | 3 | SEC | 15,575kg | 7,475kg | 3.0 |
| 532 | 5.4 m | 1.0 | 3 | DEC | – | – | 0.0 |
| 541 | 5.4 m | 1.0 | 4 | SEC | 17,443kg | 8,290kg | 1.0 |
| 542 | 5.4 m | 1.0 | 4 | DEC | – | – | 0.0 |
| 551 | 5.4 m | 1.0 | 5 | SEC | 18,814kg | 8,900kg | 4.0 |
| 552 | 5.4 m | 1.0 | 5 | DEC | 20,520kg | – | 0.0 |
| Heavy (HLV/5H1) | 5.4 m | 3.0 | – | SEC | – | – | 0.0 |
| Heavy (HLV DEC/5H2) | 5.4 m | 3.0 | – | DEC | 29,400kg | – | 0.0 |
Question:
What is the greatest CCBs with a Payload to GTO of –, and an Upper stage of sec?
Answer:
3.0