Which of the following is NOT an effective method for enhancing the security of an ECS networking solution?

Which of the following is NOT an effective method for enhancing the security of an ECS networking solution?
A . Implementing strict network ACLs and security group rules
B . Using public IP addresses for all instances to ensure accessibility
C . Encrypting data in transit using TLS/SSL
D . Segregating networks using private and public subnets

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Answer: B