Question: In a stockbrokerage firm, clients are served by brokers. Each client is assigned to a broker. A broker can handle up to 20 clients. Clients can invest in a number of standard portfolios, each of which includes a variety of stocks. A stock may be included in more than one portfolio. Draw an ER diagram, showing relationships between the following entities: client, broker, portfolio, and stock. Convert many-to-many relationships to one-to-many relationships using intermediary entities. You should include ID fields in your entities