Consider the following multiple regression models below. DFemme $=1$ if the individual is a female, and is zero otherwise; DMale is a binary variable which takes on the value one if the individual is male, and is zero otherwise; DMarried is a binary variable which is unity for married individuals and is zero otherwise, and DSingle is $(1-$DMarried$).$ Regressing weekly earnings $($Eorn$)$ on a set of explanatory variables, you will experience perfect multicollinearity in the following cases EXCEPT for:

Eanin ${?}_i=$widehat$(P6)+$widehat$(1)$ DMarried $+$widehat$(P2)$ DSingle $+$widehat$(P3)x_{3i}$