Respuesta :
Answer:
The Correct Answer is A
Explanation:
- Cyanotype is a graphic presswork method that originates from a cyan-blue print.
- Designers practiced the method well into the 20th era as an uncomplicated and low-cost method to generate prints of pictures, mentioned to as plans.
- The method employs two substances: ferric ammonium citrate and potassium ferricyanide.