Merger refers to the acquisition of another company by an enterprise, and usually occurs in the form of the acquisition of the stock of another enterprise by the company. The main forms include: (1) vertical mergers, which occur when two enterprises are at different stages of the production process Time; (2) horizontal merger, which occurs when two enterprises are in the same market; (3) mixed merger, which occurs when two enterprises operate separately in two unrelated markets. Based on the definition above, which of the following is options correct? ["A Juice Company's acquisition of Boke Cola is a horizontal merger.", 'A mobile phone company acquires B computer company, which is a vertical merger.', 'A flour mill was acquired by B bread mill, a mixed merger.', 'A commercial housing development company acquires B property management company, which is a mixed merger.']