| 1 | A | B | C | D |
| --- | --- | --- | --- | --- |
| 2 | Supermarine Spitfire (Griffon-powered variants) - Production |  |  |  |
| 3 | Mark | Built by | Numbers Built | Notes |
| 4 | F Mk XII | Supermarine | 100 | First Mk XII 13 October 1942 |
| 5 | F Mk XIV, FR Mk XIV | Supermarine | 957 | First Mk XIV RB142 28 October 1943 |
| 6 | F Mk XVIII | Supermarine | 300 | First Mk XVIII June 1945 |
| 7 | PR Mk XIX | Supermarine | 224 | First Mk XIX RM626 May 1944 |
| 8 | F Mk 21 | Castle Bromwich | 120 | First Mk 21 LA187 27 January 1944 |
| 9 | F Mk 22 | Supermarine, Castle Bromwich | (27) + (260); 287 | First Mk 22 March 1945 |
| 10 | F Mk 24 | Supermarine | 54 | First Mk 24 March 1946 |

Question: When was the first Mk 21 LA187 produced?
Answer: The first Mk 21 LA187 was produced in 1944.