Question ND: 04 A B a) Suppose the above figures shows decision boundaries for KNN and Logistic regression model applied on a 2D dataset. Answer which decision boundary ( A and B ) id for which algorithm (KNN and Logistic Regression). Explain why. b) What function is denoted by the following equation? In which machine learning algorithm (KNN or Logistic regression) is it used? 1+e(b0+b2x2+b2z2)1 c) What would be the equation of the decision boundary for the ML algorithm referred to in question b)? Explain d) With reference of question b), Explain why this function is used to fit the data rather than a linear line/hyperplane