A liquid of coefficient of real expansion `gamma` is partly filled in a vessel of coefficient of linear expansion `gamma//3`. When the system is heated, then
(a) the volume of space above liquid remains same
(b) the level of liquid relative to vessel remains same
( c) the fraction of volume of liquid in vessel remains same

Options

A. only (b) is correct
B. only (b) & ( c) are correct
C. only ( c) is true
D. all are true

Answer

A