Consider the following species

Incorrect statement is

In IV, $\stackrel{+}{N}{H}_3$ group shows both –I and –M effect and thus deactivates benzene ring from the attack of electrophile                

In II, oxygen atom of ether shows only –I effect and thus destabilizes the carbocation

In I, $N{H}_2$ group shows only –I effect

In III,-OH group shows both –I and +M effect and thus increases electron density of bezenering