You have an Azure subscription that contains a resource group named RG1 and a security group named ServerAdmins. RG1 contains 10 virtual machines, a virtual network named VNET1, and a network security group (NSG) named NSG1. ServerAdmins can access the virtual machines by using RDP. You need to ensure that NSG1 only allows RDP connections to the virtual machines for a maximum of 60 minutes when a member of ServerAdmins requests access. What should you configure? 

Answer options:

A. an Azure policy assigned to RG1
B. a just in time (JIT) VM access policy in Azure Security Center
C. an Azure Active Directory (Azure AD) Privileged Identity Management (PIM) role assignment
D. an Azure Bastion host on VNET1

B

Reference: https://docs.microsoft.com/en-us/azure/security-center/just-in-time-explained