Scientists at Lawrence Berkeley National Lab are using reinforcement learning on autonomous cars to try to reduce traffic. In reinforcement learning, actions are rewarded in proportion to how often they lead to the target behavior. Suppose we are training an agent to draw a number 5. Identify all of the following four actions that will be rewarded. 1) Drawing a horizontal line; 2) Drawing a vertical line; 3) Drawing a semi-circle; 4) Drawing a circle.