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:
| City | System | Category | Daily ridership | As of | Opened | Stations |
| --- | --- | --- | --- | --- | --- | --- |
| Vancouver, BC | SkyTrain (Vancouver) | ICTS | 354000.0 | 2009 | 1985.0 | 47 |
| Toronto , Ontario | Toronto streetcar system | Streetcar | 275200.0 | 4Q2009 | 1861.0 | N/A |
| Calgary, Alberta | C-Train | Light rail | 269600.0 | 2012 | 1981.0 | 44 |
| Edmonton, Alberta | Edmonton LRT | Light rail | 93600.0 | 2010 | 1978.0 | 15 |
| Toronto , Ontario | Scarborough RT | ICTS | 42250.0 | 2009 | 1985.0 | 6 |
| Ottawa, Ontario | O-Train | Diesel light rail | 12200.0 | 4Q2009 | 2001.0 | 5 |
Question:
Which category has 5 stations?
Answer:
Diesel light rail