A large university department needs a database to track the assignment of teaching assistants (TAs) to classes each semester. The designer created the ER model shown for Question 7 in the attachment to represent the information the database should represent.

Which narrative provides the most accurate "reading" of the ER shown in the attachment?

• A. 1 TA is assigned to 1 class. 1 class may have many TAs assigned to it. A TA must be assigned to a class. A class does not have to have a TA assigned to it.
• B. 1 TA is assigned to 1 class. 1 class may have many TAs assigned to it. A TA must be assigned to a class. A class must have a TA assigned to it.
• C. 1 TA is assigned to many classes. 1 class may have many TAs assigned to it. A TA must be assigned to a class. A class does not have to have a TA assigned to it.
• D. 1 TA is assigned to many classes. 1 class may have 1 TA assigned to it. A TA must be assigned to a class. A class does not have to have a TA assigned to it.

IN TA Assigned To Class