Let D30 = {1, 2, 3, 4, 5, 6, 10, 15, 30} and relation I be partial ordering on D30. The all lower bounds of 10 and 15 respectively are

Let D30 = {1, 2, 3, 4, 5, 6, 10, 15, 30} and relation I be partial

1.	Let D30 = {1, 2, 3, 4, 5, 6, 10, 15, 30} and relation I be partial ordering on D30. The all lower bounds of 10 and 15 respectively are
A.	1,5
B.	1,7
C.	1,3,5
D.	None of these
Answer» B. 1,7