hard20 pts · first answer countsmobile-developmentiosstorage

Core Data objects across threads

An iOS app fetches NSManagedObjects on a background context and passes them to the main thread for display. It crashes randomly. What is the rule?

A.Managed objects are tied to their context; pass objectIDs insteadB.Core Data can only be used from background threadsC.Each fetch must create a new persistent store fileD.Managed objects must be converted to JSON first

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Core Data objects across threads

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