Answer: Option A
Explanation:
The size exclusion chromatography is a type of chromatography which is based on the size of the molecules.
The solution is separated based on the molecular weight and size. It is usually used the separation of the macro molecules.
The sample carrying the mixture of substances is put into the column and then based and the weight or size the smaller molecules comes first and the larger and heavier molecules comes later.
So, the order will be Option A