The answer is C. Starting from the left and going to the right, you would do this. Multiply -2 and 3. That would equal -6. Then multiply -6 and 4. You will end up with -24. Finally, multiply -24 and 5. You will get -120.
Here is the multiplication rules - × -= + - × += - + × += +
When multiplying numbers a negative number will make a positive into a negative. Yet if multiplied again by another negative it will cancel out or make it positive again. Seeing as answer c has only one negative it's the correct answer.
