LOGICAL EXPRESSIONS #$18$ Chaitra is a doctor. The system has no documentation about whether Chaitra is verified as a referral source $($so IS$\_$VERIFIED$\_$YN stores a null value$).$ What will IS$\_$VERIFIED$\_$YN $=\text{'}$N$\text{'}$ evaluate to$?$ SELECT ONE OF THE FOLLOWING $(1$ PT$)$ A$.$ TRUE O B$.$ FALSE C$.$ UNKNOWN D$.$ YES e E$.$ NO