Consider the following elements: Ga, Sr, P, F, Ge, Rb. Arrange them in order of the following property.

Question: Arrange the elements in order of increasing atomic radius.

A) Ga < Sr = P < F < Ge < Rb
B) Sr < Rb < Ga = P < Ge < F
C) F < Ge < P < Ga = Sr < Rb
D) Rb < Sr < Ga = P < Ge < F