1 (10 points) Conceptual Questions (1.1) Is the following statement true or false? f(x) is linear with respect to x, given f(x) = wo+w1x +w2x2 where x, wo, W1, W2 E R. [True] (False] (1.2) "One-hot encoding" is a standard technique that turns categorical features into general real numbers. If we have m data points represented by k categorical features, the shape of the one-hot encoding matrix of such feature representation is: A. k x k B. 1 x k C. m xk D. m x m (1.3) Assume we have a binary classification model: f +1, 1-1, w.x+b > 0, w.x+ b