If we use the decision tree above to classify the following test dataset, what would the True Positive value
age income student credit_rating buys_computer
<=30 low no fair Yes
<=30 high no excellent No
31...40 high no Pair No
>40 medium no fair Yes
> 40 low yes excellent Yes
>40 low yes excellent NO
O 1
O 2
O 3
O 4