问题：
[单选题]Compounds A and B are immiscible. Compound B is more dense than compound A. The figure shows the situation immediately after 3 mol% C in A was added on top of 4 mol% Cin B solution. Over time, compound C will.
A.move from liquid A to liquid B
B.move from liquid B to liquidA
C.remains the same since A& B are immiscible
Yc is the fugacity coefficient of C in the fluid
