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:
| Rank | Athlete | Country | Time | Notes |
| --- | --- | --- | --- | --- |
| 1.0 | Mahé Drysdale | New Zealand | 6:50.18 | SA/B |
| 2.0 | Lassi Karonen | Sweden | 6:50.40 | SA/B |
| 3.0 | Ken Jurkowski | United States | 6:53.26 | SA/B |
| 4.0 | Sjoerd Hamburger | Netherlands | 6:57.24 | SC/D |
| 5.0 | Bajrang Lal Takhar | India | 7:19.01 | SC/D |
| 6.0 | Santiago Fernández | Argentina | 7:27.60 | SC/D |
Question:
What is the highest rank for the team that raced a time of 6:50.40?
Answer:
2.0