I would go with the third option.
I think they're all good but C sounds the most sophisticated
Please rephrase that question.
Answer:
1. Diaries, notebooks, letters. They hold the author's own words and are thus considered primary information.
2. Secondary information consists of autobiographies, poems, and text about the person. These are not from the person's eyes or perspective, instead, they are a retelling of their achievements. Hope this helps!
