Throttling requests in response to service limits

You are asked to throttle your requests in response to service limits while working with Azure Key Vault. In the given context, which of these are valid best practices that should be followed while doing so?

1. Reduce the number of operations per request.
2. Reduce the frequency of requests
3. Avoid immediate retries.

Options

1. Only 1,2
2. Only 2,3
3. Only 1,3
4. All 1,2,3