You can go to the exhibition and the palace （）

A．every day from 10: 30 a.m. to 5: 30 p.m. all year around
B．on Saturdays from 10: 30 a.m. to 5: 30 p.m. from May to October
C．on Sundays from 11: 00 a.m. to 5: 00 p.m. from March to October
D．on weekdays from March 12 to October 31 in summer