You are an AWS certified developer associate tasked with creating a CloudFormation template for a company's cloud infrastructure. The template includes three stacks named Stack-A, Stack-B, and Stack-C. Stack-A's role is to provision a VPC, a security group, and subnets designed for public web applications, and these resources are then referenced by Stack-B and Stack-C.

Once you have run these stacks, you decide to delete them. In what order should you delete the stacks?