What Are the Main Benefits of the Process Definition Cache

What are the main benefits of the Process Definition Cache? (Choose two.)

A) Caching process definitions reduces overhead by preventing the engine from hitting the filesystem.
B) Caching process definitions reduces overhead by preventing the engine from hitting the database.
C) Caching process definitions reduces overhead by preventing the engine from re-parsing the BPMN 2.0 XML.
D) Caching process definitions reduces overhead by preventing the engine from hitting the network.
E) Caching process definitions reduces overhead by reducing disk I/O.