Please answer as soon as possible.

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 Gro Black Gold Black Gold Canola Cooking Spray Fly & Insect Killer Figure 1.1 Staircase lead to disable toilet Figure 1.2 Canola Cooking Spray and Insect Spray from same manufacturer SPEAKER NOKIA MIC || Options NG Figure 1.3 Mobile phone for gamer (12 marks)