What is the lowest energy shell that contains f orbitals?

Question

answer is gonna be n= ?

Answer 1

n = 4
for n = 1 you get s
for n = 2 you get s and p
for n = 3 you get s,p and d orbitals
for n = 4 you get s,p,d and finally f orbitals.

Answer 2

n=4

Answer 3

as the energy of the shells increase, no. of orbitals in these shells also increase. so 1st energy level has only one orbital that is s ;2nd has s and p;3rd has s,p and d 4th s,p,dand f.so nth no of shell will have n no. of orbital.