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