What should they investigate first?

For this question, refer to the Mountkirk Games case study.

Mountkirk Games’ gaming servers are not automatically scaling properly. Last month, they rolled out a new feature, which suddenly became very popular. A record number of users are trying to use the service, but many of them are getting 503 errors and very slow response times .

What should they investigate first?
A . Verify that the database is online.
B . Verify that the project quota hasn’t been exceeded.
C . Verify that the new feature code did not introduce any performance bugs.
D . Verify that the load-testing team is not running their tool against production.

Answer: B

Explanation:

503 is service unavailable error. If the database was online everyone would get the 503 error.

https://cloud.google.com/docs/quota#capping_usage