The Last Page of a Book Is Numbered 764

Multiple Choice

The last page of a book is numbered 764.The book is 3.0 cm thick,not including its covers.What is the average thickness (in centimeters) of a page in the book,rounded to the proper number of significant figures?

A) 0.0039 cm
B) 0.072 cm
C) 0.0079 cm
D) 0.00393 cm
E) 0.00785 cm