Andrea needs an hour to get to the shopping center. If she leaves at $4$ PM, she gets there half an hour after the store closes. If she leaves at $8$ AM, she gets there half an hour before the store opens. What hours is the shopping center open? (2007 Math Kangaroo Problem, Level 1-2, Question \#24) 
选项为:A:$7:30$ to $4:30$  B:$8:30$ to $5:30$  C:$7:30$ to $5:30$  D:$8:30$ to $4:30$  E:$9:30$ to $4:30$  请回答其中一个选项.