Final answer:
The correct answer is both a pill tile and an ointment slab, which are used for the preparation of creams, ointments, and topical solutions to achieve a uniform consistency. The options (A) and (B) are correct.
Step-by-step explanation:
The piece of equipment you are referring to is known as a pill tile or an ointment slab. It is a flat, square piece of glass or porcelain that is used by pharmacists and technicians to compound creams, ointments, and topical solutions. This surface allows for smooth mixing and blending of ingredients to create a uniform medical product.
When preparing creams, it is important to achieve the appropriate emulsion type, whether it is oil-in-water or water-in-oil, as this affects the product's application and absorption into the skin. Therefore, options (A) and (B) are correct.