CREATE TABLE table_20551 ("Vehicle" CLOB, "EPA rated All-electric range" CLOB, "EPA rated combined fuel economy" CLOB, "Alaska  (  Juneau  ) " CLOB, "California  ( San Francisco ) " CLOB, "Mid-Atlantic South  ( Washington ,  D.C. ) " CLOB, "U.S. national average electric mix" CLOB, "Southeast  ( Atlanta ) " CLOB, "Midwest  ( Des Moines ) " CLOB, "Rocky Mountains  ( Denver ) " CLOB)

What was the emission rating in Mid-Atlantic South for the vehicle that was rated 90 g/mi (56 g/km) in Alaska and 110 g/mi (68 g/km) in California?
SELECT "Mid-Atlantic South (Washington, D.C.)" FROM table_20551 WHERE "Alaska ( Juneau )" = '90 g/mi (56 g/km)' AND "California (San Francisco)" = '110 g/mi (68 g/km)'
SELECT "Mid-Atlantic South (Washington, D.C.)" FROM "table_20551" WHERE "Alaska ( Juneau )" = '90 g/mi (56 g/km)' AND "California (San Francisco)" = '110 g/mi (68 g/km)'