Lets solve them and then find out:
-8 - (-10)
This is the same as saying: -8 + 10
-8 + 10
Subtract, and take the sign of the greater number.
10 - 8 = 2
answer would be 2, which is +
12 - 14 = 12 + (-14) = -2
7- (-3) = 7+3 = 10
Answer would be B. 12-14