Final answer:
A C corporation can have no limit on unrelated shareholders, an S corporation can have a maximum of 100 unrelated shareholders, and there is no limit to the number of partners a partnership may have.
Step-by-step explanation:
The maximum number of unrelated shareholders a C corporation can have is no limit. This means that there can be any number of unrelated shareholders in a C corporation. On the other hand, an S corporation can have a maximum of 100 unrelated shareholders. Finally, there is no limit to the number of partners a partnership may have.