(a) What are neural networks? (2 marks) (b) Give and draw TWO (2) neural network activation functions and its graph. (4 marks) (c) In neural network, setting up the parameter for training the neural network model is crucial to obtain a good accuracy of the working system. Explain the effects of epoch, learning rate, feeding properties, activation and number of test data to the neural network model. (8 marks) (d) Deep learning is a new trend in artificial intelligence. Based on your understanding, is deep learning considered as neural network? (6 marks)