What is/are the truth(s) about Qin Yi's obligation(s) as a sole agent?
A. Qin Yi is not allowed to handle the same or similar products of other origins.
B. Qin Yi is not allowed to re-export Ryran's goods to any other areas outside herown.
C. Qin Yi is obliged to give a detailed report on current market conditions and theusers’comments（评论）on the agent products every three months.
D. Qin Yi is obliged to adequately advertise and promote the sales of the productsthroughout the agreed territory.
E. Qin Yi has to pay for the sales promotion.
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