Question: A retailer brought a federal diversity action against an architect, alleging fraudulent misrepresentations in the architect's design of the retailer's store. The complaint did not include a jury demand. The architect timely moved to dismiss the action for failure to state a claim; he did not file an answer. Twenty days after being served with the motion, the retailer amended the complaint to add a defamation claim based on the architect's recent statements about the retailer in a local newspaper. In the amended complaint, the retailer demanded a jury trial on both claims. Has the retailer properly demanded a jury trial? 
A: No, because the retailer filed the demand more than 14 days after service of the motion to dismiss.
B: No, because the retailer filed the demand more than 14 days after service of the original complaint.
C: Yes, but on the defamation claim only, because the original complaint did not contain a jury demand.
D: Yes, on both claims, because the architect had not answered the original complaint when the retailer filed the amended complaint with the jury demand.
Please eliminate two incorrect options first, then think it step by step and choose the most proper one option. Respond with more than 350 words.
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