In the context of a smart city project utilizing wireless sensor networks and gateways for data transmission, your team is tasked with optimizing the placement of nodes to ensure cost-effectiveness and inclusivity. The project has strict constraints: it must not rely on data tagging, should minimize operational costs, and ensure scalability to accommodate future expansion. Given these constraints, which algorithm would be most suitable for dynamically determining the optimal placement of nodes through a system of rewards without the need for labeled data? (Choose two correct options if E is available)