[多项选择]

甲因经济拮据，将一祖传古画(按照国家法律可以出卖)于2007年2月9日出卖给乙，双方约定：价款5万元，乙先期支付3万元，余款2万在3个月内付清，余款付清之前，甲仍拥有该画的所有权。合同签订后，乙即支付甲3万元并将画带回家。4月3日，乙将该画以6万元的价格在古玩市场卖给丙，丙付款并取走画。5月3日，乙将剩余2万元价款付给甲。丙得到画后一个月，丙父重病，急需用钱。丙以该画设定质押向丁借款30万元。丙与丁在签订了质押合同，并且约定如果丙到期不能清偿债务，则该画归丁所有。根据以上条件，回答下列问题：

就甲、乙之间的合同而言，以下关于古画的所有权转移和风险负担问题，表述正确的是( )。
A. 甲保留所有权的约定无效，所有权2月9日转移给乙
B. 甲保留所有权的约定有效，5月3日所有权转移给乙
C. 若画在4月3日之前因火灾毁损灭失的，甲应承担该画的损失
D. 若画在4月3日之前因火灾烧毁灭失的，乙应承担该画的损失
E. 若画在4月3日之后因火灾烧毁灭失的，丙应承担该画的损失

My mother started the San Francisco version of the Joy Luck Club in 1949, two years before I was born. This was the year my mother and father left China with one stiff leather trunk filled only with fancy silk dresses. There was no time to pack anything else, my mother had explained to my father after they boarded the boat. Still his hands swam frantically between the slippery silks, looking for his cotton shirts and wool pants.
When they arrived in San Francisco, my father made her hide those shiny clothes. She wore the same brown-checked Chinese dress until the Refugee Welcome Society gave her two hand-me-down dresses, all too large in sizes for American women. The society was compo