Which of the following would most likely be considered private inurement?

Group of answer choices

a) A charity has a policy of providing unlimited, interest-free loans to its directors and officers.

b) A CEO of a charity receives part of her compensation as a bonus determined by the donations raised in a given year, with a maximum bonus level determined by the board of directors.

c) A university forms an LLC with a for-profit company to deliver off-campus classes, and splits the revenue from the classes evenly with the company.

d) A charity refers to their donors as "investors" and has an annual "shareholders meeting" to tell them about the work they have done.