Which of the following statements with reference to Salt Weathering is/are correct? 1. Salt crystallisation is the most effective of all the salt weathering processes. 2. Salt crystal growth is more effective over sedimentary rocks as compared to igneous rocks. Select the answer using the code given below :

Salt weathering involves the disintegration of rocks by the crystallisation of salts in pores and cracks. Among the various salt weathering processes (hydration, thermal expansion, crystallisation), salt crystallisation is recognised as the most effective mechanical weathering process. Porous and permeable sedimentary rocks like sandstone and limestone are far more susceptible to salt crystal growth weathering than the typically dense, crystalline igneous rocks because salts can readily enter the pore spaces of sedimentary rocks. Hence both statements are correct.