How is the following compare-and-contrast essay organized?
 Football means different things to people in different countries. For Americans, it is a game with set plays that are designed to march an oblong ball down the field in a near-military fashion. For much of the rest of the world, football, or soccer, is a display of free-flowing action where a round ball is in constant motion up and down the field.
 A. 
 by chronological order
 B. 
 point by point
 C. 
 subject by subject
 D. 
 by order of importance