Consider a classification problem where the dependent variable is risk coded as two classes $($high or low$).$ In one of the decision tree nodes there are $100$ records, out of which $70$ belong to the high risk class and $30$ to the low risk class. Which of the following is a measure of the quality $($goodness or badness$)$ of the node? $($Select all the apply.$)$Group of answer choices$0\mathrm{.}7*0\mathrm{.}30\mathrm{.}7*0\mathrm{.}7-0\mathrm{.}3*0\mathrm{.}30\mathrm{.}7*0\mathrm{.}7+0\mathrm{.}3*0\mathrm{.}30\mathrm{.}6*0\mathrm{.}6+0\mathrm{.}4*0\mathrm{.}4$