Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Padu, Istigai are the synonyms of Navacharam (Ammonium Chloride).
Reason (R) : Navacharam in excess dose causes diarrhoea.
In the light of the above statements, choose the most appropriate answer from the options given below: