Ciel wins the P4's trust, but he still can't find a chance to get close to the Head Master. And so he brings up the subject of Derrick Arden with the P4 and their drudges. When he does, the expressions on the prefects' faces change...
I couldn't say. 
It was the Head Master's decision.
لا أدري. كان قرار مدير المدرسة
Das weiß ich nicht.
Das hat der Rektor so entschieden.
Quién sabe. Fue decisión del director.
Lo ignoro. Fue decisión del director.
Je l’ignore.
Le principal en a décidé ainsi.
Non saprei.
Não sei. Foi a decisão do diretor.
Не знаю.
Так распорядился ректор.