What is the implication of using Deferred versus Concurrent firmware updates？（）
- ADeferred firmware updates require a reboot to be applied， while concurrent updates do not.
- BDeferred firmware updates require a full power IPL to be applied while concurrent updates do not.
- CConcurrent firmware updates require all LPARs to be quiesced and shutdown prior to initiating the update， while deferred updates do not.
- DConcurrent firmware updates can be applied to multiple managed systems in parallel， while deferred updates must be applied sequentially.