oTheres no way you can write a negative twice with a top and bottom You can put the negative in the middle or one on ONE number top or bottom but never can be both
For A and B where the negative is doesn't matter since the decimal form of both of these fractions is equal to -0.66667 (they are equal no matter where u put the negative sign). the decimal form of - 2/3 is also -0.666667. A good rule to know is that a negative divided by a negative or a negative multiplied by a negative is always a positive. in c, -2/-3 is actually 0.66667 meaning its incorrect.
Hard to explain through writing but hoped this helped
