Which of the Following Methyl Groups Gives the ¹H NMR

Which of the following methyl groups gives the ¹H NMR signal with the highest frequency? $\begin{array} { l l l l } \text { I. } & \mathrm { CH } _ { 3 } \mathrm { NH } _ { 2 } & \text { IV. } & \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { CH } _ { 3 } \end{array}$
II. $\mathrm { CH } _ { 3 } \mathrm { OH }$
III.

V.

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