What is the Transport layer of the TCP/IP model responsible for?

What is the Transport layer of the TCP/IP model responsible for?
A . It transports packets as datagrams along different routes to reach their destination.
B. It manages the flow of data between two hosts to ensure that the packets are correctly assembled and delivered to the target application.
C. It defines the protocols that are used to exchange data between networks and how host programs interact with the Application layer.
D. It deals with all aspects of the physical components of network connectivity and connects with different network types.

Answer: B