Which of the Following Compounds Gives the ¹H NMR $\left( \mathrm { CH } _ { 3 } \right) _ { 4 } \mathrm { C }$

Which of the following compounds gives the ¹H NMR signal with the highest frequency? I. $\left( \mathrm { CH } _ { 3 } \right) _ { 4 } \mathrm { C }$ .
II. $\left( \mathrm { CH } _ { 3 } \right) _ { 4 } \mathrm { Si }$
III. $\left( \mathrm { CH } _ { 3 } \right) _ { 3 } \mathrm { Ni }$
IV.

V.

A) I
B) II
C) III
D) IV
E) V