For any relation R, if, for every valid instance of A, that value of A uniquely determines the value of B: A. then a primary dependency exists in the relation. B. then A is said to be functionally dependent on B. C. then B is said to be functionally dependent on A. D. then A and B are candidate keys for the relation. E. None of these are true.

Read these lines from beowulf.often scyld scefing seized mead-benches from enemytroops, from many a clan, he terrified warriors, even thoughfirst he was found a waif, best explains why the author includes this information in theexposition? a. to emphasize that a hero must learn to be fierceb. to remember the famous story of a popular heroc. to express sadness about losing the old heroesd. to see whether people still respect the old heroes