The correct options are
B Gaganachukki
D Bharachukki
Shivanasamudra in the Mandya district is home to twin waterfalls. The Kaveri river forms the twin waterfalls Gaganachukki and Bharachukki falls. Jog falls is located in the Shivamogga district, while Magod falls is located in the Uttara Kannada district of Karnataka.