Question 1 (7 points) Select all the correct statements about the following EER diagram. Note: When we say that e1,e2 are E-entities we mean e1,e2 are different. M N E R F Every F-entity must participate in R It is possible that a certain F-entity does not participate in R Every E-entity must participate in R If E is empty then also F is empty If E is non-empty then also F is non-empty Suppose that f1,82 are F-entities and e is an E-entity. It is legal for R to contain the relationships (e,f1) and (e,f2). Suppose that e1,e2 are E-entities and f is an F-entity. It is legal for R to contain the relationships (e1,f) and (e2,f).