Yardangs are best described as?

A. long narrow ridges of sand lying parallel to the direction of the prevailing winds
B. steep-side vertical bands of alternate hard and soft rocks aligned in the direction of the prevailing winds
C. flat, table-like masses with very resistant horizontal top layers and very steep sides
D. tabular, horizontal strata of alternate hard and soft rocks sculptured into a ridge and furrow landscape by wind
E. hills of sand formed by the accumulation of sand and shaped by the movement of winds

Correct Answer:

Option B – steep-side vertical bands of alternate hard and soft rocks aligned in the direction of the prevailing winds