Plz tell the answer of 5th question                                  

5. Given the universal set = { x : x $\in$ N and x < 20}, find :

(i)  A = {x : x  = 3p ; p$\in$N}
(ii)  B = {y : y  = 2n + 3, n$\in$N}
​​​​​​​(iii)  C = {x : x is divisible by 4}