Question: Which of the following statements about Java's exception handling mechanism is true with respect to checked and unchecked exceptions?

A) Checked exceptions must be declared in the method signature or handled within the method.
B) Unchecked exceptions cannot be caught and handled using try-catch blocks.
C) Both checked and unchecked exceptions need to be declared in the method signature.
D) Checked exceptions are typically related to programming errors, while unchecked exceptions are for user input errors.