Step-by-step explanation:

I think option two is the correct one, because 1 and two contradict eachother and 4 doesn't make sense
I would go with C because if you do A then its all new students and thats one view D is the same. C seems like the best choice.
Hmm, 3 shirts cost $84 all together 84 divided by 3 is 28. 28+28+28=84. Each shirt had to be $28 to equal $84 for the final price. Hope this was right!