In which of the following areas can GPS technology be used? 1. Mobile phone operations 2. Banking operations 3. Controlling the power grids Select the correct answer using the code given below:

GPS (Global Positioning System) technology, which provides accurate positioning and timing information, has a wide range of applications in various sectors: 1. **Mobile phone operations**: GPS is fundamental for navigation apps, location-based services (like finding nearby restaurants, ride-sharing), geotagging photos, and emergency services (e.g., E911). 2. **Banking operations**: GPS can be used for various aspects, including location-based fraud detection (e.g., flagging transactions far from a user's usual location), synchronizing ATM networks, and tracking valuable assets. Precise time synchronization from GPS is also crucial for financial transactions. 3. **Controlling the power grids**: Modern power grids, especially smart grids, rely heavily on precise timing for synchronizing various components, detecting faults, optimizing power flow, and managing renewable energy sources. GPS provides this highly accurate timing reference (GPS clock) which is essential for the stability and efficiency of the grid. Thus, GPS technology finds significant utility in all the mentioned areas.