请教‌‌‍‍‌‌‍‌‌‌‌‍‌‌‍‌‌‌‌‍‌‌‌‍‍‍‍‍‌‍‌‍一道LSAT LR Sample题

Text messaging applications are now part of the base software package for any computer, phone, or tablet. One benefit is that users can remain in seamless contact no matter what device they are using, and users do not have to bring their phone with them wherever they go. However, some believe that they also have disadvantages. For example, some people do not want to be reachable at all hours of the day, no matter where they are. Texting can also be distracting during important activities like being at work or driving.

Which of the following statements best expresses the main conclusion of the above argument?

A. Use of text messaging applications can result in problems

B. Text messaging applications are now a routine part of any computer, phone, or tablets

C. There are advantages and disadvantages to the use of text messaging applications on all devices

看似好像应该选C, 但是难道结论是由是文中两个单句一起组成的吗？