( )16.A key in DBMS is an attribute or set of attributes which helps you to identify a row(tuple) in a relation(table). Which of the following statements is NOT correct? (A) A super key is a group of single or multiple keys which identifies rows in a table. (B) A candidate key is a minimal super key or a super key with no redundant attribute. (C) All the candidate key which are not a primary key are called an alternate key. (D) The primary key is the minimal set of attributes which uniquely identifies any row of a table. Any super key can become a primary key.