A solution is always a liquid Why

A solution is always a liquid. Comment. 

Answer: Since, a solution is the homogeneous mixture of two or more substances, thus it is not necessary that a solution would always a liquid. 

A solution can be in all the three states of matter. A solution is a homogeneous mixture and can be in all the three states of matter. 

Example: Solution of alcohol in water is a liquid. Air is a solution of different gas. Alloy is a solution which is in the form of solid.