I’m not 100% sure, but I think you could re-calculate the ratios now that D is gone.
So since D is half, A,B, and C are now the only options, meaning that there is a 100% chance you will get either A/B/C. Because of that their ‘percentages’ will double, since your chances of getting each one will increase by 50%.
So I think the answers would be:
A= 0.60
B= 0.20
C=0.20
(But, I thinks it’s odd that they wouldn’t ask you to factor in the amount of toys that decreased from A/B/C so I might be reading it wrong, maybe someone else could confirm?? )