Correct answer - "4 KB" : You can encrypt up to 4 kilobytes (4096 bytes) of arbitrary data such
as an RSA key, a database password, or other sensitive information.
Incorrect:
"1MB" - Anything over 4 KB may want to look at AWS Encryption SDK
"10MB" - Anything over 4 KB may want to look at AWS Encryption SDK
"16KB" - Anything over 4 KB may want to look at AWS Encryption SDK