I would say a), c) and d) all represent potential ethical issues and becoming aware of the mistake and misquote means that they must be reported immediately ie use full disclosure and for referring a friend for a job interview could be considered conflict of interest.
One example of irony is the fact that a rose, marked with both thorn and the color red.
if someone leaves their house in the pursuit of success they are willing to go outside of there comfort zone and take on new challenges.
