| 1 | A | B | C | D | E |
| --- | --- | --- | --- | --- | --- |
| 2 | Line 3 (Shenzhen Metro) - Second stage |  |  |  |  |
| 3 | Segment | Commencement | Length | Station(s) | Name |
| 4 | Caopu — Shuanglong | 28 December 2010 | 25.138 km (15.62 mi) | 16 | Phase 1 (elevated section) |
| 5 | Yitian — Caopu | 28 June 2011 | 16.522 km (10.27 mi) | 14 | Phase 1 (underground section) & Phase 2 |

Question: How big was the first phase of line 3?
Answer: Line 3's first phase has 16 stations, with a length of 25.138 km (15.620 mi).