Answer:
All of the above are express warranties
Step-by-step explanation:
Express warranty: This is a product guarantee that is provided to a customer or buyer against any damages or malfunction of the product within a specified period of time. This guarantee could cover replacement or repair of the product. Most product that are been purchase are always covered under warranty.
All the statements mentioned constitute an express warranty because they all ascertained that the products are effectively performing the purpose for which they were meant for. When a guarantee is given on a product but it could not effectively perform the purpose for which it is meant for, then it is an Implied warranty.