SASMO 2014 P2 Q9  Two $1 coins and ten 50c coins are randomly distributed among 4 children such that each child receives the same number of coins. What is the difference between the biggest amount and the smallest amount a child can receive? 
选项为:A:$$50c$$  B:$1  C:$1.50  D:$2  E:None of the above  请回答其中一个选项.