Which of the Following Statements A), B) or C) Is

Multiple Choice

Which of the following statements a) , b) or c) is false?

A) Like Python dictionaries, key-value databases store key-value pairs, but they're optimized for distributed systems and big-data processing.
B) For performance, key-value databases tend to replicate data in multiple cluster nodes.
C) Some key-value databases are implemented in memory for performance, and others store data on disk.
D) All of the above statements are true.