While both statements are independently true, they are not directly connected as cause and effect. Salt can act as a laxative when consumed in excess, leading to diarrhoea, which validates the assertion. Simultaneously, in clinical practice, salts are given in the form of Oral Rehydration Solutions (ORS) to manage fluid loss during diarrhoea, making the reason true as well. However, the administration of salts in diarrhoea is a treatment measure, not the cause of diarrhoea, hence (R) does not explain (A).