Q: Given the following piece of code:

class SalaryCalculationException extends Exception{}
class Person{
        public void calculateSalary() throws SalaryCalculationException{
                //...
                throw new SalaryCalculationException();
                //...
        }
}
class Company{
        public void paySalaries(){
                new Person().calculateSalary();
        }
}

Which of the following statements is correct?
1. This code will compile without any problems.
2. This code will compile if in method paySalaries() we return a boolean in stead of void.
3. This code will compile if we add a try-catch block in paySalaries().
4. This code will compile if we add throws SalaryCalculationException in the signature of method paySalaries().

Answer: D

Explanation:

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