Correct answer: A). Is described as loamy
The course, infertile soil is normally found near the base of the mountains. It provides stable bases for the high mountain. It helps to keep the ground firm and it would take a longer time to erode and evolve. These soil are a type of loamy soil. The nature of erosion can affect the composition and structure of these type of soil. Rest all other options are false.
Hence, the correct answer would be option B