The desk should be prepared for commercial guests, who typically arrive about ____ and depart on a later date at about_____.
a) 10:00 a.m. to noon; and noon to 2:00 p.m.
b) 2:00 p.m.; and noon to 1:00 p.m.
c) 4:00 p.m. to 7:00 p.m.; and 7:00 a.m. to 9:00 a.m.
d) Noon to 2:00 p.m.; and whenever their business is done