CREATE TABLE table_13450 ("Position" TEXT, "Gymnast" TEXT, "A Score" FLOAT, "B Score" FLOAT, "Total" FLOAT)

what is the b score when the a score is 6.9?
SELECT "B Score" FROM table_13450 WHERE "A Score" = '6.9'
SELECT "B Score" FROM "table_13450" WHERE "A Score" = '6.9'