题目内容

甲有祖传珍贵玉器一件,乙丙均欲购买之。甲先与乙达成协议,以5万元价格出售之。双方约定,次日交货付款。丙知晓后,当晚即携款至甲处,欲以6万元价格购买之。甲欣然应允,并即交货付款。对此,下列表述中,正确的是()。

A. 甲与丙之买卖合同无效
B. 甲与乙之买卖合同无效
C. 乙得请求丙交付该玉器
D. 乙得请求甲承担违约责任

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