A SysOps Administrator is managing a Memcached cluster in Amazon ElastiCache. The cluster has been heavily used recently, and the Administrator wants to use a larger instance type with more memory. What should the Administrator use to make this change?

A. use the ModifyCacheCluster API and specify a new CacheNodeType
B. use the CreateCacheClusterAPI and specify a new CacheNodeType
C. use the ModifyCacheParameterGroupAPI and specify a new CacheNodeType
D. use the RebootCacheClusterAPI and specify a new CacheNodeType