There are 28 mango trees, 42 apple trees and 21 orange trees have to be planted in rows such that each row contains the same number of trees of one variety only. The minimum number of rows in which the above trees may be planted is:

There are 28 mango trees, 42 apple trees and 21 orange trees have to b

1.	There are 28 mango trees, 42 apple trees and 21 orange trees have to be planted in rows such that each row contains the same number of trees of one variety only. The minimum number of rows in which the above trees may be planted is:
A.	9
B.	10
C.	11
D.	13
Answer» E.