多项选择题

A.乙的优先购买权优先于丙、丁的优先购买权
B.丙的优先购买权优先于乙、丁的优先购买权
C.丁的优先购买权优先于乙、丙的优先购买权
D.乙的优先购买权优先于丙的优先购买权