What does t he following command do with respect to the Amazon EC2 security groups?

What does t he following command do with respect to the Amazon EC2 security groups?

ec2-create-group CreateSecurityGroup
A . Groups the user created security groups in to a new group for easy access.
B . Creates a new security group for use with your account.
C . Creates a new group inside the security group.
D . Creates a new rule inside the security group.

Answer: B