SCJP - 18 -Given Example

Which is true? (Choose all that apply.)
A. Woop is-a Hmpf and has-a Zing.
B. Zing is-a Woop and has-a Hmpf.
C. Hmpf has-a Woop and Woop is-a Zing.
D. Woop has-a Hmpf and Woop is-a Zing.
E. Zing has-a Hmpf and Zing is-a Woop.

Answer:

D is correct, Woop inherits a Hmpf from Zing.

A, B, C, and E are incorrect based on the preceding.
(Objective 5.5)
==

class Zing {
protected Hmpf h;
}
class Woop extends Zing { }
class Hmpf { }