Gina is reading a book about the history of Italian cooking. Read part of the book's foreword: Although many Americans know that Italian food consists of more than pizza with tomato sauce, most are not aware that the assortment of food eaten in Italy is as varied as the country itself. This book documents the breadth of this cultural treasure - from almond cake to zeppole -the whole nine yards. What does the author mean by the phrase the whole nine yards?

A everything

B an assortment of toppings

C a nine-yard long zeppole

D an Italian food item everyone likes​