Can an experts answer this please??!!

QUESTION 4 Given below are the business rules for UiTM library system: The book borrower may be classified as either a student or a staff. A staff who is doing a part-time study program is also classified as a student. A staff may be a lecturer or an administrator or both. A student is either a postgraduate or an undergraduate student. Draw an Extended Entity Relationship Diagram (EERD) that shows a generalization hierarchy of supertype and subtype entities. Your answer must fulfill the rules of EERD. (6 marks)