23 USER Code --030 U1 U3 UZ b1 x22 b2 Consider the following specialization. Notice that sub-class U1 has only two attributes, while U2 and U3 have 23 attributes and 30 attributes, respectively. Assume that this database has 10 million users where 40% of them belong to U1 sub-class, 20% to U2 sub-class and 40 % to U sub-class. Which one of the following is correct regarding the mapping process? 2 points) O Option BA is recommended in the core Either Option B or Option 80 srecommended the Dr Options recomended Opticomedia U w Consider the following Union where each entity has a different format of the primary key. Assume that entity A has 8 attributes. B has 10 attributes, C has 5 attributes and D has 15 attributes. After mapping the EER. how many attributes the relation W would have? 2 Points) it would have one attribute At least 5 attributes 35 attributes atti 25 nama son Person Patient Doctor The minimum number of relations to map the following EER diagram to a relational schema is (Note: it is Total, overlapping) (2 points) 02 Os 06