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:

1. Statement 1 is correct. GPS technology is integral to modern mobile phone operations, providing location data for navigation apps, emergency services, geo-tagging, and various location-based services. 2. Statement 2 is correct. While not always directly customer-facing, banking operations rely on precise timing for synchronizing transactions across networks and validating financial operations globally. The highly accurate time signals from GPS satellites are widely used for this purpose. 3. Statement 3 is correct. Controlling the power grids requires precise time synchronization across different points in the grid for monitoring and managing power flow efficiently and preventing failures. Phasor Measurement Units (PMUs), which use GPS timing signals, are essential for this modern grid management (Synchrophasor technology).