Which of the following is correct with respect to $-I$ effect of the substituents? ($R=\text{alkyl}$)

The $-I$ (Inductive) effect depends on the electronegativity of the atom directly attached to the carbon chain.Electronegativity order: $\text{F}>\text{O}>\text{N}$.Therefore, the $-I$ effect order is: $-\text{F}>-\text{OR}>-{\text{NH}}_2$.Matching Option C.