PCA (Prometheus Certified Associate) sample exam question with answer 368

Question:
Which query below will give the 95% quantile of the metric http_file_upload_bytes?

1. quantile(http_file_upload_bytes, 0.95)
2. histogram_quantile(0.95, http_file_upload_bytes_bucket)
3. http_file_upload_bytes(quantile="0.95"}
4. http_file_upload_bytes < 95%

Answer:
B - correct answer