Roland took the kids shopping for school supplies . He came back miserable that he had spent $ 100 . The kids wanted these fancy binders , and mechanical pencils , and Gary wanted a little white board to write his assignments on . Then he just bought erasers and notebooks and stuff .

Question: Why was Roland so upset ?
Answer: Because the children had been hard to control while shoppingBecause while they were shopping , the kids had been unrulyBecause the kids had misbehaved in the store and knocked things overBecause he had n't anticipated the extent of his kid 's demands