Assume that the following code compiles without error in a client of the Book class. What do you know about the Book class?

Book book1 = new Book("Secret Coders", "Gene Luen Yang", 2015); Book book2 = new Book("Alan Turing: The Enigma", 2014);

1. The Book class has at least two constructors.
2. The author name may or may not be needed to construct a Book object.
3. Both the book title and author name are required to construct a Book object.

a	I only
b	I and II only
c	I and III only
d	II and III only
e	I, II, and III