Assistant：Can I help you？
Colin ：Yes，it’s about this sports shirt．I washed it the other day．The colour ran and it shrank．
Assistant：Oh dear，I see．________________________
Colin ：I’m afraid not．
Assistant：I’m sorry，but I’m not allowed to change anything without a receipt．
A．Did you buy it here？ B．Would you want to change it？ C．Do you have the receipt？ D．Could you tell me who sold it to you？