To multiply fractions you can multiply straight across the top and straight across the bottom
-5*8= -40
-12*13= -156
So the answer is -40/156
-40 and -156 are both divisible by 4, so it can be reduced
If we divide -40 by 4 we get -10
When we divide -156 by 4 we get -39
So the answer in its simplest form is -10/39, making B the correct answer
