Which is correct for the Transport layer services:

Group of answer choices

b$)$ Transmission Control Protocol $($TCP$)$ provides reliable connection$-$oriented data transferring services;

c$)$ Three$-$way handshake is used at the beginning of each TCP connection;

a$)$ Both Transmission Control Protocol $($TCP$)$ and User Datagram Protocol $($UDP$)$ are available to use;

d$)$ All of above.