Consider the following statements regarding the Earth's interior and select the correct answer using the codes given below: A. Maximum density of the Earth is found in the inner core. B. Maximum velocity of P-waves is recorded in the lower mantle. C. Velocity of S-waves is less than P-waves in the crust.

The crescent-shaped sand dunes found in Sam, Jaisalmer are scientifically known as:

With reference to fjords, consider the following statements: I. They are deep, narrow inlets carved mainly by glaciers and later occupied by seawater. II. The shallow sill near their mouth is generally associated with glacial deposition rather than with tectonic uplift alone. III. They are chiefly associated with high-latitude or formerly glaciated coasts, rather than with humid tropical landscapes. How many of the statements given above are correct?