Ethical Egoists Have to Keep in Mind That How Things

Ethical egoists have to keep in mind that how things go for oneself often depends on how others behave.

A) If you are rude and dishonest to your colleagues in the office they are likely to treat you in the same way. As an egoist you therefore have a strong reason to treat others well.
B) If your acquaintances find out that you are an egoist they are likely to punish you, so if you are an egoist, it is likely to be in your best interest to not tell anyone about this and be nice and polite to others.
C) The consequences of some of the actions open to us are sometimes unknown or difficult to foresee, meaning that we may not be in a position to conclude with certainty what an ethical egoist should do in a particular case.
D) All of the above