Answer:
Streaming movies may stop to buffer
Explanation:
microphones have a set record limit, and games downloaded wont generate errors unless something in the code is wrong, printers don't really need to connect to internet to work except for some, and streaming movies buffer because as you are watching them it downloads the next few minutes.
This is configured on the BIOS Setup. During computer start-up usually for windows system this can be accessed via pressing on ESC or Function keys on immediate start up.
Class B would be the correct answer.