Question: When did the Virginia county whose FIPS 6-4 (US counties) is 51059 get a local dialing code of 703?
Choices:
1870-01-18
2003-09-23
1993-01-27
1940-07-10
1966-02-14
1979-10-01
1947
1953-08-19
1803-03-01
1991-09-19