You are going to develop a database that will store information about journals for a publisher. Each journal has a journal identification number and name. Each journal may have any number of issues $($for example, monthly issues or quarterly issues etc.$).$ Each issue is identified by its number and date issued. Each issue contains some articles. Each article may be written by one or more writers. Each writer$$s name, address and the fee paid to the writer for an article are also recorded. A writer may contribute many articles to any journal. Assuming you need to build an ER diagram based on the above statement, which one in the following is not an entity in the ER diagram: