单项选择题
The quantity of tickets ordered and/or distributed may vary and (147) affect the presented prizes. For further information (148) the prizes, call the OLGC Customer Excellence Center toll-free at 1-800-755-8959.
Instant winning tickets must be redeemed (149) the "Prizes Must Be Claimed by" date printed on the back of the ticket.
A. must
B. would
C. could
D. should