A User Has Created a Public Subnet with VPC and Launched

Multiple Choice

A user has created a public subnet with VPC and launched an EC2 instance within it. The user is trying to delete the subnet. What will happen in this scenario?

A) It will delete the subnet and make the EC2 instance as a part of the default subnet
B) It will not allow the user to delete the subnet until the instances are terminated
C) It will delete the subnet as well as terminate the instances
D) The subnet can never be deleted independently, but the user has to delete the VPC first