Which of the Following Describes a Well-Developed or "Old"stream Valley

Multiple Choice

Which of the following describes a well-developed or "old"stream valley?

A) valleys are v-shaped and narrow with an irregular profile
B) streams meander with a narrow floodplain and relatively smooth profile
C) a broad, flat floodplain with a meandering stream, oxbow lakes, and a graded profile
D) none of the above