Problem #3: For the aforementioned relation schema with its functional dependencies, compute the attribute closure for each of the following sets of attributes. a) {A} b) {C,E} c) {D} d) {B, C} Problem #3: For the aforementioned relation schema with its functional dependencies, compute the attribute closure for each of the following sets of attributes. a) {A} b) {C,E} c) {D} d) {B, C}