The answer is: A. Subsidiary company.
A subsidiary company is a company that is controlled by another company, called the parent company. The parent company can control the subsidiary company by owning a majority of its shares, by having a majority of its board of directors, or by having a contract
with the subsidiary company.A holding company is a company that owns shares in other companies. The holding company does not have to control the other companies, but it may do so if it wants to. Holding companies are often used to manage a group of companies that are related to each other.
A private company is a company that is not listed on a stock exchange. Private companies are usually owned by a small number of people, such as the founders of the company or their families.
A government company is a company that is owned by the government. Government companies are usually used to provide essential services, such as water, electricity, and transportation.
In conclusion, a company which acquires all or majority of equity shares of other companies is a subsidiary company.