Bedrock requests receive transient throttling during bursts. Which two changes most appropriately improve stability? Select 2 answers.

1. Double concurrent requests after every throttle.
2. Suppress throttle metrics and declare all requests successful.
3. Retry every AccessDenied response indefinitely with unchanged credentials.
4. Control concurrency and review the applicable model request and token quotas.
5. Use bounded backoff with jitter for retryable throttling responses.