Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 657 discussion

A managed prefix list is a set of one or more CIDR blocks. You can use prefix lists to make it easier to configure and maintain your security groups and route tables. You can create a prefix list from the IP addresses that you frequently use, and reference them as a set in security group rules and routes instead of referencing them individually. If you scale your network and need to allow traffic from another CIDR block, you can update the relevant prefix list and all security groups that use the prefix list are updated. You can also use managed prefix lists with other AWS accounts using Resource Access Manager (RAM). https://docs.aws.amazon.com/vpc/latest/userguide/managed-prefix-lists.html#:~:text=A-,managed%20prefix,-list%20is%20a

I will go for B

prefix list for CIDR blocks

https://docs.aws.amazon.com/vpc/latest/userguide/managed-prefix-lists.html

Such a badly worded question: "The company has multiple offices around the world. The company needs to update security group rules to allow new office CIDR ranges or to remove old CIDR ranges across the organization." Are the CIDR groups associated to offices? That will be illogical. I think it should be VPC and not offices.

Answer is B

looks like B is the answer. Reference: https://docs.aws.amazon.com/vpc/latest/userguide/managed-prefix-lists.html