Azure Automation supports both automation and configuration management activities. Azure Automation can also be used to manage server updates and desired state configuration. There are several components which make up Azure Automation. Which of the following is best described by "These are the unit of execution in Azure Automation and can be defined as one of three types: a graphical unit based on PowerShell, a PowerShell script, or Python script. PowerShell units are most commonly used to manage Azure SQL resources" ?