In America, ketchup can be used with food all year long. You can put it on french fries, chicken, and hamburgers. Ketchup is a tomato-based sauce that is used for dipping and for flavoring. It is often made from tomatoes, vinegar, corn syrup, salt, and spices. Before ketchup was tomato-based, it was made from different foods. There were ketchups made from mushrooms and walnuts. Even cucumbers, red peppers, and fruits were used. Each of these ingredients gave ketchup a distinct flavor.

Identify the text structure of the passage above.
A.
cause and effect because the reason behind tomato-based ketchup is explained
B.
compare and contrast because the flavors of each kind of ketchup are compared
C.
classification because the topic of dipping sauces is divided into several subtopics
D.
definition because the word ketchup is defined and examples of its flavors are given