CREATE TABLE table_43257 ("Season" TEXT, "Staffel A" TEXT, "Staffel B" TEXT, "Staffel C" TEXT, "Staffel D" TEXT, "Staffel E" TEXT)

What is the Staffel B that has Hallescher Fc Chemie as Staffel C?
SELECT "Staffel B" FROM table_43257 WHERE "Staffel C" = 'hallescher fc chemie'
SELECT "Staffel B" FROM "table_43257" WHERE "Staffel C" = 'hallescher fc chemie'