Google Professional Data Engineer
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In a scenario where messages are unexpectedly accumulating in a service using Cloud Pub/Sub, and a developer unfamiliar with Cloud Pub/Sub seeks your help to diagnose the issue, what key point would you highlight regarding how messages are removed from Cloud Pub/Sub topics?
A
Messages are deleted from storage once at least one subscriber for any subscription has acknowledged the message.
B
Messages are deleted from storage once at least one subscriber for each bucket has acknowledged the message.
C
Messages are deleted from storage once at least one subscriber for each topic has acknowledged the message.
D
Messages are deleted from storage once at least one subscriber for each subscription has acknowledged the message.