Context: Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another.
Nathan and Doug open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Nathan wanted broccoli in his lunch and Doug was hoping for tomatoes. Look at the images of their lunches. Then answer the question below.
What can Nathan and Doug trade to each get what they want?
A. Nathan can trade his tomatoes for Doug's broccoli.
B. Doug can trade his broccoli for Nathan's oranges.
C. Nathan can trade his tomatoes for Doug's sandwich.
D. Doug can trade his almonds for Nathan's tomatoes.
Select the correct answer from the provided options and reply with the letter associated with it.

A