using the table and decision tree classification model age income student credit_rating buys_computer 40 medium no fair Yes >40 medium yes fair No 3140 high

using the table and decision tree classification model

age	income	student	credit_rating	buys_computer
<=30	low	yes	fair	No
<=30	medium	yes	excellent	No
>40	low	yes	fair	Yes
>40	medium	no	fair	Yes
>40	medium	yes	fair	No
3140	high	no	fair	Yes
3140	high	yes	fair	Yes
3140	low	yes	excellent	No
3140	medium	no	excellent	Yes
<=30	high	no	excellent	No
<=30	low	no	fair	Yes
<=30	medium	no	fair	No
>40	low	yes	excellent	Yes

The root Gini Index of the labeled class buys_computer is :

	A-	0.46
	B-	0.5
	C-	0.53
	D-	0.47