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_27 (registrations VARCHAR, type VARCHAR, station_number VARCHAR)

### Question ###
What is the registration of the station with a retained type and a station number of c03?

### Accurate SQL ###

SELECT registrations FROM table_name_27 WHERE type = "retained" AND station_number = "c03"