Given the task definition and input, reply with output. In this task, you will be presented with a question having multiple possible answers in German language. And you should choose a most suitable option out of "A", "B", "C", "D", and "E" based on your commonsense knowledge.

Question: Wenn man die Toilette brauchte, brauchte man einen Schlussel, um ihn zu bekommen, musste man auch etwas von dem was?
Options: A Schule B Lebensmittelgeschaft C Rastplatz D Einkaufszentrum E Theater
B