Consider the following relations on {1, 2, 3, 4, 5}. Which of the following relations are not reflexive?
(A) R1 = {(1, 1), (2, 2), (3, 3), (4, 4)}
(B) R2 = {(1, 1), (1, 2), (2, 1), (2, 2), (3, 4), (2, 1), (3, 2), (4, 4), (5, 5)}
(C) R3 = {(1, 1), (2, 2), (3, 3), (4, 4), (5, 5)}
(D) R4 = {(1, 1), (2, 2), (3, 4), (4, 5), (2, 1), (3, 2), (4, 4), (5, 5), (3, 3)}
(E) R5 = {(1, 1), (2, 1), (3, 2), (4, 4), (5, 5)}
Choose the correct answer from the options given below:
1
(A), (C), and (E) Only
2
(B) and (D) Only
3
(A), (B), and (E) Only
4
(C) and (D) Only