İngilizce telefon konuşmaları (Telephone conversations) Test 1

Read the dialogue:
"Hello, you've reached the customer service line for 'Global Goods'. All our agents are currently busy. Your estimated wait time is 5 minutes."
What is this recording?

A) A personal greeting from an agent
B) An automated voice message or hold message
C) A final warning before disconnection
D) A sales promotion