Answer:
A
Explanation:
If they are connected via bluetooth, you can share unlimited amounts of anything.
The options listed are not related to the question. and if they were related in any sense then I would say the cheapest thing on the list is a phone card so I guess you can buy that and save the most for your travel as you can use phone cards anywhere as they have 1800 numbers which are free from any public phone.
FTP stands for file transfer protocol. FTP is used to transfer files between computers over the Internet. FTP servers can be setup to allow users to access the information anonymously or require registration for access.