What statement accurately reflects what occurs when a message is too large to transport on a network?

a$.$ The message is sent anyway, and is received by the destination as garbage data.

b$.$ The message is divided into smaller messages called segments $($for TCP$)$ or datagrams $($for UDP$).$

c$.$ An ICMP error is generated, and the application must reformat the data for transmission.

d$.$ The message is discarded and must be sent again.