Multi-choice problem: Continue writing the next sentence in this paragraph:

How to use voip
Figure out which of three categories of callers you fall into :
Ata, ip phones, and computer-to-computer.
Adapt with an ata or analog telephone adaptor.
This is the most common way of using voip.

Options are:
a). It enables verb combinations, keywords such as " computer, " " internet, " and other masculine prepositions. Iip-phones use mixers in order to get directly on telephone networks without needing a cable.;
b). Learn how to log on to the phone. These are usually important features on applications such as voiceover, yahoo, and downloads.;
c). Most phone services have a " connect to ip " option. If you use an ata router, you should not only enable dial to ip but you should also enable ip internet radio to send text messages.;
d). This adapter actually allows you to hook up the phone, which is already in your house, to your internet connection. What the ata does, is turn the normal analog signal that your average home phone sends into digital signals that can be sent over the internet.;
d).