What makes a penny rust faster orange juice or soda?

steps on what makes a penny rust faster Orange Juice or soda#1 pure orange juice in 1 cup and soda in another cup#2 put a penny in both of the cups#3 put the two pennies in each cup#4leave the two cups outside for one or two weeks#5 take the camera and take the photo#6 develop the picture#7 look at the to pictures carefully and see which one got rusted