Subclasses of the class Exception which are not subclasses of RuntimeException require mandatory exception handling.$$ What are the practical implications of this statement?

Question $28$Select one or more:

a$.$

If a method can throw such an exception, then it must declare this fact by adding a throws clause to the method heading.

b$.$

If a routine includes any code that can generate such an exception, then the routine must deal with the exception.

c$.$

The routine cannot handle the exception by adding a throws clause to the method definition.

d$.$

The routine can handle the exception by including the code in a try statement that has a catch clause to handle the exception.