When a developer uses Page Ability to open a ServiceAbility, he needs to pass parameters through Intent, at what stage is the parameter obtained in the whole process null?

When a developer uses Page Ability to open a ServiceAbility, he needs to pass parameters through Intent, at what stage is the parameter obtained in the whole process null?

onStart( ) in A S ervice.
A . bility
B . PageAbility
C . ServiceAbility
D . ServiceAbility

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Answer: B