A Using the tf.data API (TensorFlow Data API) read a Python list. Write code snippets to: a) Print the sum of all elements in the list b) Generate a new list with elements the squares of the input list. E.g. Input List =[1,2,3,4,5], then: Python script for a) should generate output =15 Python script for b) should generate output =[1,4,9,16,25] B> Below is a code snippet utilizing the TF/Keras API. a) Explain the code, line by line: model =t f.keras. Sequential ([ tf.keras.layers.Dense (10, activation=tf.nn.relu, input_shape =(4),), tf.keras.layers.Dense(10, activation=tf.nn.relu), tf.keras.layers.Dense(3) ]) b) What is another way (using again the TF/Keras API) to re-write the code