The correct options are
C
7, 10
D
0, 1
Whole numbers are not closed under subtraction. So , subtraction of two whole numbers might not result in a whole number.
Whole numbers are {0,1,2,3,...}
I. 5 - 2 = 3, a whole number.
II. 7 - 10 = -3, not a whole number.
III. 3 - 1 = 2, a whole number.
IV. 0 - 1 = -1, not a whole number.