What does the simile, "grinning like someone who'd just won the lottery" mean? A) That he was happy that he'd won a great deal of money he could share with his dad. B) That his father had brought him a great deal of money, making him extremely happy. C) That he was very happy to see his dad, as happy as he might be if he won the lottery. D) That playing the lottery is a form of gambling, which could lead to problems for the boy.