Which statement has the best style and structure?
А
The post office will be open for that day is not a legal holiday.
B
The post office will be open for that day, is not a legal holiday.
с
The post office, will be open for that day is not a legal holiday
D
The post office will be open, for that day is not a legal holiday.
E
The post office will be open for that day is not a legal, holiday