单项选择题

Where does the conversation most probably take place

A.From 8:30 a.m. to 8: 30 p. m.
B.From 9:30 a.m. to 6:30 p. m.
C.From 8:30 a.m. to 6:30 p. m.
D.From 9:30 a.m. to 3: 30 p. m.