Which statement is/are true?

Product item is a specific version of a product that has a separate name or designation in the seller's list

Product line is a group of closely related to products which are able to satisfy a class of need, to be used together, to be sold to the same customer groups to be moved through the same distribution channels or fall within given price ranges

Product mix also referred to as product portfolio, Product mix is the composite of products offered for sale by a firm or a business unit