You have an Azure Cosmos DB database that hosts a container named container1. You need to ensure that the items stored in container1 will NOT expire unless their TTL value is set explicitly. What…

Setting `DefaultTimeToLive` to 0 means all items without an explicit TTL will expire immediately after creation, which contradicts the requirement.

Removing the `DefaultTimeToLive` property is ambiguous and might default to items never expiring or relying on an account-level setting, but -1 is the explicit way to disable container-level default TTL.

Setting `DefaultTimeToLive` to `null` is generally not a valid or supported configuration for this property and might lead to an error or undefined behavior.

Setting the `DefaultTimeToLive` property to -1 on a container explicitly disables the default TTL policy for all items within that container. This ensures items will persist indefinitely unless an individual item has its own `ttl` property set to a positive integer, overriding the container's default.