5. Assume you have FDs, G-A--B, A--C, ? ?, ?-D, C D, D A), what is the primary key? AB (meaning A&B together form the primary key.] b) a) BC (meaning B&C together form the primary key) CD (meaning C&D together form the primary key) c) d) any single attribute A, B, C, or D can be the primary key 6. Is the set of FDs, G, from the previous question minimal? a) yes, because we don't want to lose any functional dependencies b) yes, because the right-hand side of each dependency has just one attribute c) no, because I of the functional dependencies is redundant d) no, because 2 of the functional dependencies are redundant