In a class there are five students James, Smith, Mary, Robert, and Jack and one of them broke the white board of the class. The teacher asked each of them in the class about the incident knowing that two of them always tell truth. The statements of the students are as follows :
James : Mary did not break it nor did Robert.
Smith : I did not break it nor did Robert.
Mary : I did not break it, but Jack did it.
Robert : James or Jack broke it.
Jack : Mary broke it.
Find the name of the student who broke the white board.
(A) Mary
(B) James
(C) Jack
(D) Smith
(E) None of these