Let's say we want to build a model for a real estate company where they want to find out what is the right price to buy a house so that they can sell it at higher profits. The company wants to predict the price of the house based on its characteristics, such as the number of rooms, whether it has a garage, the built year, etc. As a Data Scientist, we want to build a Neural Network to solve this problem.

Which of the following activation functions will be used in the output layer?