Which of the following statements best describes the geographical location of the Rajasthan Plain?
AIt is situated to the east of the Aravali Mountain range and primarily comprises the Marusthali.
BIt is located to the west of the Shiwalik ranges and includes the semi-arid region known as Rajasthan Bagar.
CIt is positioned to the west of the Aravali Mountain range
DIt lies to the east of the Indus River and is characterized by fertile alluvial soil.