PCA (Prometheus Certified Associate) sample exam question with answer 196

Question:
Which of the following tools is BEST represented by the description below?

Each customer is entitled to $1,000 if we fail to provided at least 99.9% availability for our service over a given month

1. SLI
2. SLO
3. SLA
4. Error Budget Policy

Answer:
C - SLA is the correct answer as the given description implies an agreement