When $RNA$ is hydrolysed,there is no relationship among the quantities of different bases obtained. What does this fact suggest about the structure of $RNA$?

(N/A) $DNA$ molecule is double-stranded,in which base pairing occurs according to Chargaff's rules. Adenine $(A)$ always pairs with thymine $(T)$,and cytosine $(C)$ always pairs with guanine $(G)$. Therefore,upon hydrolysis of $DNA$,the amount of $A$ equals $T$,and the amount of $C$ equals $G$.
In contrast,when $RNA$ is hydrolyzed,there is no fixed relationship or equality among the quantities of the different nitrogenous bases obtained. This observation suggests that $RNA$ does not possess a double-stranded structure with complementary base pairing; rather,it is single-stranded.