I think that B, C, and D, would rather be good news in most typical circumstances, and only in some very atypical ones could they qualify as a stressor.
On the other hand, A is a potential stressor: you could be unsure whether your house is clean enough for the visit!
What’s the challenge you researched ?
Passing cultural ideas from china to japan
korea is located right between china and japan so it was considered a cultural bridge