If Andrea leaves at $4$ PM, she arrives at the store when it is $5$ PM, and the store closes at $4:30$ PM. 
Andrea needs an hour to get to the shopping center. If she leaves at $4$, she gets there half an hour after the store closes. When does the shopping center close? 
Options:
(1) $3:30$ 
(2) $5:30$ 
(3) $5:00$ 
(4) $4:00$ 
(5) $4:30$ 