A description is a statement or a collection of statements about the characteristics of an object. An explanation is a statement that involves the evaluation of data, discusses the significance and importance of an idea, or gives reasons for something. According to the above definitions, which of the following are descriptions?

I. inference
II. observation
III. prediction
IV. summary
A.
I and III only
B.
I, III, and IV only
C.
II, III, and IV only
D.
II and IV only