Ok let’s look at everything you know every 10 kids 6 of them bought there car
Now you want a percentage
The only one that would work is A because it is focusing out of a 100 which percents are
B is wrong because 100 divided by 6 isn’t a whole number and you can’t have half a kid
C is wrong because the statistic is 4/10
And D is wrong because the statistic is wrong it isn’t out of 100 students but instead out of 10