Consider the following statements. [2 points] A functional…

Consider the following statements. [2 points] A functional dependency is checked by examining the instance of a relation. [2 points] The violation of a functional dependency is checked by examining the instance of a relation. [2 points] If an attribute has occurred on the right-hand side of some functional dependencies but not on the left-hand side of any functional dependency, it must be in the candidate keys. Give reasons for each statement whether it is correct or incorrect. Give the reason even if it is correct.