Tech Support: Tech Support, how can I help you?
Customer: Hi, I'm calling because my internet connection isn't working.
Tech Support: Okay, can you describe the problem in more detail?
Customer: The Wi-Fi light on my modem is off.
What is the customer's problem?
A) Their phone is broken.
B) Their computer is slow.
C) Their internet connection is down.
D) They can't find their modem.