After sinking the Arabic in August 1915, the Germans agreed…

After sinking the Arabic in August 1915, the Germans agreed to the Arabic Pledge, which stated…. A. That the Germans would, essentially, stop sinking all ships. B.  That the Germans would not sink passenger liners without warning. C.  That the Germans would sink any and all ships that its U-boats found. D.  That the Germans U-boat commanders would learn the Arabic language.