Lever Bros. markets a number of different brands of laundry detergents including Radion, Persil Power, Persil Colour and Surf. Each of these specific versions of laundry detergents can be described as:
A)a product item
B)a product line
C)a core product
D)a mix item
A)a product item
B)a product line
C)a core product
D)a mix item