Your cluster Is subject to a service-level agreement that allows for little scheduled down time You want to use patching

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Your cluster Is subject to a service-level agreement that allows for little scheduled down time You want to use patching and maintenance methods that permit the Oracle GridInfrastructure and Oracle RAT Databases to be available as much as possible.Which two techniques will work some or all of the time to provide you with minimum down time?

A. rolling upgradeable and in place patch sets
B. idling upgradeable and out of place patch bundles
C. rolling upgradeable and out of place patch sets
D. rolling upgradeable and in place patch bundles E. rolling upgradeable and out of place one-off patches