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Consider the following relational schema. ITEM (ItemName, ItemType, ItemColour) DEPARTMENT (Deptname, DeptFloor, DeptPhone, Manager) EMPLOYEE (EmpNo, EmpFname, EmpSalary, DeptName, SupervisedBy) SUPPLIER (SupNo, SupName) SALE (SaleNo, SaleQty, ItemName, DeptName) DELIVERY (DeliNo, DeliQty, ItemName, DeptName, SupNo) Write the SQL statements for the following queries: a) Find the name of employees who works in the HR Department. [2 Marks] b) Count the number of employees in Marketing Department. [2 Marks] c) Find the supplier's name who supplies Maximum items. [2 Marks] d) For each department that sell item of type toys, find the average salary of the employee. [2 Marks] e) Find the name of items sold on first and second floor. [2 Marks]