Which of the following statement is/are correct?

(A) Denudation involves weathering, mass wasting and erosion

(B) Physical Weathering and Mechanical Weathering process differ only in scale

(C) In dry climates, salt-crystal growth and weathering lead to the formation of distinctive hollowed-out near the bases of sandstone cliff

(D) Exfoliation occurs when temperature changes cause minerals to expand and contract at different rates

Choose the correct answer from the options given below: