Answer:
A. capital contributions
Step-by-step explanation:
In most states, unless the founders of the corporation have decided otherwise, voting power is directly proportional to the amount of capital contributions, or better, the percentage of capital contributions over the total.
This is why when a person acquires over 50% of the capital of a firm, the person likely has full power over it, because he will always have the majority of voting power, even if everyone else votes against.