Read the Following Scenario and Answer the Question Below

Read the following scenario and answer the question below.
Early People and Agricultural Beginnings
Long ago, two sisters were talking as they returned from their morning trip to collect mushrooms, seeds, berries, and green leaves for the day's meals. The younger woman was watching the progress of a small rabbit as it hopped across the path and toward the clan's trash midden (refuse heap) , where broken tools (made of bone, stone, or shell) were tossed, and where discarded food was thrown. She noticed the rabbit stop and begin nibbling at the many new, green shoots sprouting across one side of the midden. She walked over to look, and she saw that some of last year's discarded dried fruits were growing. Surprised and interested, she called her sister over to discuss this find.
-The horizon where leaching has deposited materials is called the ______________

A) C horizon
B) E horizon
C) parent material
D) B horizon
E) O horizon