Let A = {1,2,3,7} and B = {3,0,-1,7}, which of the following are relation from A to B ?(i) R1 = {(2,1), (7,1)}(ii) R2 = {(-1,1)}(iii) R3 = {(2,-1), (7,7), (1,3)}(iv) R4 = {(7,-1), (0,3), (3,3), (0,7)}

Let A = {1,2,3,7} and B = {3,0,-1,7}, which of the following are relation from A to B ?
(i) R1 = {(2,1), (7,1)}
(ii) R2 = {(-1,1)}
(iii) R3 = {(2,-1), (7,7), (1,3)}
(iv) R4 = {(7,-1), (0,3), (3,3), (0,7)}

Match the items on the right to the items on the left.