What is the primary difference between the 3p and 3s orbitals, considering the energy levels and electron interactions?

a) Electrons in the 3p subshell have lower energy and are shielded by the 3s electrons.
b) Electrons in the 3p subshell have higher energy and are partially shielded by the 3s electrons.
c) Electrons in the 3p subshell have higher energy and are fully shielded by the 3s electrons.
d) Electrons in the 3p subshell have lower energy and are partially shielded by the 3s electrons.