
Passage: In the past, we had a lot of unrealistic boasting on moral propaganda, so that many people said one thing from their mouths and did another behind their backs, resulting in the phenomenon of split personality. Through thinking about this phenomenon, some scholars propose that we should only require general people to abide by the "bottom-line ethics".
Question: According to your understanding, which of the following options is the most appropriate for the definition of "bottom-line ethics"?
A. A."Bottom-line ethics" is not to steal, not to kill.
B. B."Bottom-line ethics" are some of the minimum and most basic behavioral norms and standards that general people in society should abide by.
C. C."Bottom-line ethics" are not ethics that demand selfless devotion.
D. D.If human morality is an edifice, "bottom-line ethics" are the foundational part of that edifice.
Answer: