Which classifiers would be best used to indicate a cup of milk on the coffee table?

CL:C and CL:B

CL:C and CL:4

CL:5 and CL:B

CL:W and CL:C

The classifiers CL:C and CL:B would be the best choice to indicate a cup of milk on the coffee table. This combination specifies that the object (cup of milk) is cylindrical in shape (CL:C) and is located on a flat surface (coffee table) (CL:B).