77. A positively charged conductor attracts a second object. Which of the following statements could be true?
I. The second object is a conductor with negative net charge.
II. The second object is a conductor with zero net charge.
III. The second object is an insulator with zero net charge..
(A) I only
(B) II only
(C) III only
(D) I, II \& III
(A) I only
(B) II only
(C) III only
(D) I, II & III