Which of the following most logically completes the argument?

Sviatovin is a medieval Moringian text whose author and exact date of composition are unknown. However, the events in the life of Prince Sviatov that the text describes occurred in 1165, and in the diagram of Sviatov's family that accompanies the text his father, who died in 1167, is identified as still living. Thus Sviatovin must have been written between 1165 and 1167, assuming that ________.

• Athe life of Prince Sviatov is not the subject of any other medieval Moringian texts  
• Bthe author of Sviatovin intended it to provide as accurate a report about Prince Sviatov's exploits as possible  
• Cthe diagram accurately represents the composition of Sviatov's family at the time Sviatovin was written  
• DSviatovin is the earliest Moringian text whose composition can be dated to within a few years  
• ESviatovin was not written by Sviatov's father himself