An Amazon EC2 Administrator Created the Following Policy Associated with an IAM

An Amazon EC2 administrator created the following policy associated with an IAM group containing several users: What is the effect of this policy?

A) Users can terminate an EC2 instance in any AWS Region except us-east-1.
B) Users can terminate an EC2 instance with the IP address 10.100.100.1 in the us-east-1 Region.
C) Users can terminate an EC2 instance in the us-east-1 Region when the user's source IP is 10.100.100.254.
D) Users cannot terminate an EC2 instance in the us-east-1 Region when the user's source IP is 10.100.100.254.