Option A is true because IP is short form of Internet protocol.
Option B is true because when every device is connected to the servers by using internet, Internet Service providers assign them unique IP address to define their identity on internet and monitor their activities.
Option C is false because no matter how many laptops or devices are connected to a same router through a network Internet Service Providers assign them a same IP address.
Option D is true because every laptop or device connected to the internet by a network is given the same public IP or external IP.