Given below are two statements, one is labelled as Assertion A and other is labelled as Reason R Assertion A: After application of urea in soil, it undergoes hydrolysis where organic form of N is transformed to inorganic form of ammonium carbonate. The hydrolysis of urea is more in sandy soil than clay soil. Reason R: Urea molecule forms positive charged ion due to keto-enol formation or zwitterion Formation, resulting formation of positive charged urea molecules which is adsorbed by the negatively charged clay. In light of the above statements, choose the correct answer from the options given below