The correct options are
A They have to protect the country’s international borders during peace times.
B They help in the management of resources and people during the time of disaster.
D They are responsible for maintaining security at railway stations, oil depots, water reserves etc.
Paramilitary forces are organised like military forces. But they are not formally a part of the military. They are neither a military force nor a civil force.
Their responsibilities range from maintaining security at important locations like railway stations, oil depots, water reserves etc. They help in the management of resources and people during the time of disaster.
Some of the paramilitary forces have to protect the country's international borders during peace times.