Yes and no.
Yes- simply because even though they are not real out in the real world they are because they are humanoids inside a virtual gaming type world
No- simply because they are not walking among us other humanoids or even alive on the real planet
never would be but if it does occur it would be rarely
I would go with C if she eats out of the bag as a snack between meals then it won't really help!
Eat Healthy food (avoid fatty, unhealthy foods)
Exercise, Mostly Cardio (Running, Walking, Jogging)
Limit meals to snacking 4-6 times a day, not eating huge portions all at once, like normal.
Do not over-eat, stay within your boundaries of how many calories your body needs per day
Stay positive: Having a positive attitude for all of the other steps is honestly a huge key, and staying committed to a plan that you have set.