HELP PLEASE Which of the following questions could be answered through a scientific investigation?

I. What type of antibacterial soap kills the most bacteria?

II. What type of food do dogs think tastes the best?

III. Does the color pattern of a butterfly affect its chance of survival?

IV. Do cats feel sad when they are alone?

A. I and IV only
B. I and III only
C. I, II, III, and IV
D. II and III only​