A: Most excretory substance are in soluble in water in human.
R: Water itself considered a waste product.
(a) If both the ‘A’ and ‘R’ true and ‘R’ is a correct explaination of ’A’
(b) If both the ‘A’ and ‘R’ true and ‘R’ isnot a correct explaination of ’A’
(C) If A is true the R is false
(D) If A is false the R is true