kon'nichiwa~
please help me with this question!!

Let's check the relationship
[tex]\\ \rm\hookrightarrow g=\dfrac{GM}{r^2}[/tex]
[tex]\\ \rm\hookrightarrow g\propto G[/tex]
So
Option C is wrong by now .Let's check D once
[tex]\\ \rm\hookrightarrow T\propto \dfrac{1}{\sqrt{g}}[/tex]