Question 5 Given the relations Tot yet answered Marked out of 2.00 employee (name, salary, deptno), and department (deptno, deptname, address) Which of the following queries cannot be expressed using the basic relational algebra operations (0, 1, m, 0, 0,-) ? p Flag question Select one: O a. Department address of every employee O b. Employee whose name is the same as their department name O c. The sum of all employee salaries O d. All employees of a given department