Let A = {1,2,3} and B = {2,4, 6}. For each relation between A and B given as a subset of A...

Let A = {1,2,3} and B = {2,4, 6}. For each relation between A and B given as a subset of A × B, decide whether it is a function mapping A into B. If it is a function, decide whether it is one to one and whether it is onto B.

a. {(1,4), (2,4), (3,6)}

b. {(1,4), (2, 6), (3,4)}

c. {(1, 6), (1, 2), (1,4)}

d. {(2, 2), (1, 6), (3, 4)}

e. {(1,6), (2, 6), (3,6)}

f. {(1,2), (2, 6), (2, 4)}