Jose combined the like terms in the expression. Marc claims that he made a mistake. Negative 8 x squared y minus 17 x y squared + 12 x y minus 8 + 5 x squared y minus x y squared minus 12 x y = negative 3 x squared y minus 18 x y squared + 24 x y minus 8

Jose asks Marc to explain how to fix his error. Which is the best explanation that Marc can give Jose?
Jose, you should have added 12 and –12 for the xy terms.
Jose, you should have added –8 and –5 for the for the x squared y terms.
Jose, you should have added –17 and 1 for the x squared y terms.
Jose, you should have added –8 and the two 12s for the xy terms.