Given the following ER Diagram. Please answer: (1) What is the descriptive attribute in the following ERD? (2) what is the relationship between the builder and the contractor? A date: one-to-many B. date: many-to-many C. contract: one-to-many Which of the following statement is correct given the following ERO? Hint think about what is the relationship between the professor and department, one-to-one, one-to-rnany, or many-to-many? Pay attention to the total participation rule indicated by that double line. A. the "department" is the "many" side in the relationship called "Relationship" B. the "Professor" is the "one" side in the relationship called "Relationship" C. A professor does not have to join any department D. A professor must join at least one department