You are developing an Azure Function App named App1. You also plan to use cross-origin requests (CORS). You have the following requirements: App1 functions must securely access an Azure Blob Storage account. Access to the Azure Blob Storage account must not require the provisioning or rotation of secrets. JavaScript code running in a browser on an external host must not be allowed to interact with the function. You need to implement App1. Which configuration should you use for Azure Blob Storage access?