True or False: In Amazon ElastiCache, you can use Cache Security Groups to configure the
cache clusters that are part of a VPC.

A.
FALSE

B.
TRUE

C.
True, this is applicable only to cache clusters that are running in an Amazon VPC environment.

D.
True, but only when you configure the cache clusters using the Cache Security Groups from the
console navigation pane.

Explanation:
Amazon ElastiCache cache security groups are only applicable to cache clusters that are not
running in an Amazon Virtual Private Cloud environment (VPC). If you are running in an Amazon
Virtual Private Cloud, Cache Security Groups is not available in the console navigation pane.
http://docs.aws.amazon.com/AmazonElastiCache/latest/UserGuide/CacheSecurityGroup.html