You have created a VPC with two subnets. The web servers are running in a public subnet, and the database server is running in a private subnet. You need to download an operating system patch to update the database server. How you are going to download the patch?$($A$)$ B$.$ By using a NAT gateway$($B$)$ A$.$ By attaching the Internet gateway to the private subnet temporarilyD. By changing the security group of the database server and allowing intern access$($D$)$ C$.$ By using peering to another VPC