4. Usability is the extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency and satisfaction in a specified context of use. "Bad usability will lead to poor design. Answer the following questions based on the pictures given below (Figure 1.1, 1.2 and 1.3). a) Type of error b) Who is affected C) Impact to user d) Design solution Fly & Insect Killer Canola Cooking Spray Figure 1.1 Staircase lead to disable teilet Figure 1.2 Canale Cooking Spray and Insect Spray from same namefacturer SPEAKER MIC m ODD Figure 1.3 Mobile phone for gamer (12 marks)