An active matrix display with a resolution of 1024 x 768 has 8,000 transistors

As you drag items in PowerPoint, the mouse pointer displays a small star to indicate that it is moving text

Indicate whether the statement is true or false

If class Dog has a subclass Retriever, which of the following is true?

A. Because of single inheritance, Dog can have no other subclasses. B. Because of single inheritance, Retriever can extend no other class except Dog. C. The relationship between these classes implies that Dog "is-a" Retriever. D. The relationship between these classes implies that Retriever "has-a" Dog.