An event log entry that is an error is marked with a red circle with a white exclamation point in the center.

When all of a superclass's subclasses need a method, but each needs a different behavior from that method, the superclass should declare the method as a(n) ____ method.

A. static B. private C. class D. abstract

Specify the following queries in SQL on the database schema of Figure 1.2.

(a) Retrieve the names and major departments of all straight-A students (students who have a grade of A in all their courses). (b) Retrieve the names and major departments of all students who do not have any grade of A in any of their courses.