The desert plains in the northern part of Arabian peninsula are covered with A sand B wadis C volcanic rock?

The desert plains in the northern part of Arabian peninsula are covered with sand. The Arabian Desert is a large desert in Western Asia. It is located in the Middle East and covers most of the Arabian Peninsula. The desert is mostly covered with sand, with some areas of gravel and rock. The sand is mostly a light brown or tan color, and it is very fine. The sand is often blown by the wind, creating sand dunes. The sand dunes can be very large, and they can move over time.