If you are working on a research project in which you must present a short documentary film about the history of your family, the source that would be considered most credible for this project is hand-written letters from your great-great grandmother about her immigration.
You will get the most information from her letters.
That if you are speaking to someone through message or email or any written message it has no tone. You may say something with good intentions & someone may take it the wrong way.
Three They are all pretty un-important to the rest of the story. Why didn't you just google this?
I think its A but it could be C