Which of the following exception classes must be handled or declared in the method in which they are thrown? (Choose three.) 

A. Happy

B. Dopey

C. Sleepy

D. Sneezy

E. Doc

F. Grumpy

public class Happy extends IOException {} public class Dopey extends Grumpy {} public class Sleepy extends IllegalState Exception {} public class Sneezy extends Unsupported OperationException {} public class Doc extends AssertionError {} public class Grumpy extends SQLException {}