A Company Has Decided to Use Encryption in Its AWS

A company has decided to use encryption in its AWS account to secure the objects in Amazon S3 using server-side encryption. Object sizes range from 16,000 B to 5 MB. The requirements are as follows: The key material must be generated and stored in a certified Federal Information Processing Standard (FIPS) 140-2 Level 3 machine. The key material must be available in multiple Regions. Which option meets these requirements?

A) Use an AWS KMS customer managed key and store the key material in AWS with replication across Regions.
B) Use an AWS customer managed key, import the key material into AWS KMS using in-house AWS CloudHSM, and store the key material securely in Amazon S3.
C) Use an AWS KMS custom key store backed by AWS CloudHSM clusters, and copy backups across Regions.
D) Use AWS CloudHSM to generate the key material and backup keys across Regions. Use the Java Cryptography Extension (JCE) and Public Key Cryptography Standards #11 (PKCS #11) encryption libraries to encrypt and decrypt the data.