Salesforce Platform Developer I (CRT-450) Test 1

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Question : 7 of 30

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What is the requirement for a class to be used as a custom Visualforce controller?

Any top-level Apex class that has a constructor that returns a PageReference
Any top-level Apex class that extends a PageReference
Any top-level Apex class that has a default, no-argument constructor
Any top-level Apex class that implements the controller interface

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