PCA (Prometheus Certified Associate) sample exam question with answer 379

Question:
Which attribute(s) of an alerting rule allow adding additional metadata? (Select all that apply.)

1. labels
2. template
3. annotations
4. metadata
5. meta

Answer:
A, C - are a correct answers. More at defining-alerting-rules
B, D, E - are incorrect as this is not an attribute of an alerting rule