For which three reasons was a packet switched connectionless data communications technology used when developing the Internet (Choose three.) Select one or more:
a. Network devices dynamically decide on the best available path to forward each packet.
b. Data packets can travel through the network using multiple different path
c. it allows for billing of network use by the amount of time a connection is established
d. It requires that a data circuit between the source and destination be established before data can be transferred.
e. it can rapidly adapt to the failure of network devices and communication links