A global organization has a data warehouse and one of the dimensions is to keep track of sales employees; information such as name, email and location. A unique employee number is assigned to each salesperson by the HR. It is a business practice to transfer a salesperson from one location to another from time to time. Which of the following is the best way to design the primary key for the dimension? Group of answer choices Use the employee number as the primary key Use the employee number and email as a composite primary key Use the employee number and location as a composite primary key Create a surrogate key as the primary key