B. You already said the answer.
Some quotes include:
"Patience is a conquering virtue"
- Geoffrey Chaucer
“The lyf so short, the craft so long to lerne.”
- Geoffrey Chaucer, The Parliament of Birds
“What is better than wisdom? Woman. And what is better than a good woman? Nothing.”
- <span>Geoffrey Chaucer</span>
Because if it was written after the time of the event, the source may be inaccurate. Also, if it was written in a different place to the event the source is taking about, that place could be particularly biased for or against that event.
