Given the Following Constructor Code, Which of the Statements Are

Given the following constructor code, which of the statements are true? public Book(String ISBNOfBook, double priceOfBook,
Int numberOrderedOfBook)
{
If (ISBNOfBook == "")
Throw new BlankISBN() ;
If (priceOfBook < 0)
Throw new NegativePrice(priceOfBook) ;
If (numberedOrderedOfBook < 0)
Throw new NegativeNumberOrdered(numberOrderedv) ;
ISBN = ISBNOfBook;
Price = priceOfBook;
NumberedOrdered = numberOrderedOfBook;
}

A) There is an error: a throws clause should be added to the constructor header.
B) Classes extending the Exception class should be created for each of the custom exceptions that are thrown in the constructor.
C) A FileNotFoundException will be thrThe calling method must handle the exceptions thrown in the constructor, or have its own throws clause specifying them.
D) All of these are true.