Given.<br /> <img src="https://img.ppkao.com/2018-08/wenxueying/2018080115322175165.png" /><br /> Which two statements are true?()<p> Given.<br /> <img src="https://img.ppkao.com/2018-08/wenxueying/2018080115322175165.png" /><br /> Which two statements are true?()</p>
A、A.Foo.beta() is a valid invocation of beta().
B、B.Foo.alpha() is a valid invocation of alpha().
C、C.Method beta() can directly call method alpha().
D、D.Method alpha() can directly call method beta().