It’s for a single room and bath _____ Mr. Mark on the 10th of this month.

A.S＝0，RO＝0

B.S＝0，RO＝∞

C.S＝∞，RO＝0

D.S＝∞，RO＝∞

A.97%;

B.98%;

C.99%;

D.99.5%

A.RO：F

B.RO：L

C.RO：S

D.RO：C

A.EX

B.BR

C.S

D.RO