Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_75 ( staffel_a VARCHAR, staffel_b VARCHAR, staffel_d VARCHAR, staffel_c VARCHAR )

### Question ###
What is the Staffel A that has a Staffel D of Energie Cottbus and a Staffel C of Chemie Leipzig and a Staffel B of 1. FC Union Berlin?

### Accurate SQL ###

SELECT staffel_a FROM table_name_75 WHERE staffel_d = "energie cottbus" AND staffel_c = "chemie leipzig" AND staffel_b = "1. fc union berlin"