| 1 | A | B | C | D | E | F |
| --- | --- | --- | --- | --- | --- | --- |
| 2 | British Rail Class 170 - Current fleet details |  |  |  |  |  |
| 3 | Class | Operator | Number | Built | Carriages | Unit nos. |
| 4 | 170/1 | CrossCountry | 17 | 1998–99 | 3 | 170101–110 |
| 5 | 170/1 | CrossCountry | 17 | 1998–99 | 2 | 170111–117 |
| 6 | 170/2 | Greater Anglia | 8 | 1999 | 3 | 170201–208 |
| 7 | 170/2 | Greater Anglia | 4 | 2002 | 2 | 170270–273 |
| 8 | 170/3 | Abellio ScotRail | 4 | 2004 | 3 | 170393–396 |
| 9 | 170/3 | CrossCountry | 2 | 2002 | 3 | 170397–398 |
| 10 | 170/4 | Abellio ScotRail | 22 | 1999–01 | 3 | 170401–420, 170470–471 |
| 11 | 170/4 | Abellio ScotRail | 10 | 2003–04 | 3 | 170425–434 |
| 12 | 170/4 | Abellio ScotRail | 2004–05 | 170450–170452 | 3 | - |
| 13 | 170/4 | Northern | 16 | 2004–05 | 3 | 170453–461, 170472–478 |
| 14 | 170/5 | West Midlands Trains | 17 | 1999–00 | 2 | 170501–517 |
| 15 | 170/5 | CrossCountry | 6 | 1999–00 | 2 | 170518–523 |
| 16 | 170/6 | West Midlands Trains | 6 | 2000 | 3 | 170630–635 |
| 17 | 170/6 | CrossCountry | 4 | 2000 | 3 | 170636–639 |

Question: What are the two 3-car units (170397 and 170398) operated by?
Answer: The two 3-car units (170397 and 170398) are operated by CrossCountry.