Which of the following cache engines does Amazon ElastiCache support?

A.
Amazon ElastiCache supports Memcached and Redis.

B.
Amazon ElastiCache supports Redis and WinCache.

C.
Amazon ElastiCache supports Memcached and Hazelcast.

D.
Amazon ElastiCache supports Memcached only.

Explanation:
The cache engines supported by Amazon ElastiCache are Memcached and Redis.
http://docs.aws.amazon.com/AmazonElastiCache/latest/UserGuide/SelectEngine.html