{i} (\"I 1"ll Figure 1: Treatment means (interaction) plots of two-factor models (i) and (ii) 4. Figure 1 contains treatment means (interaction) plots of two-factor models (i) and (ii). Note: none of the plots is a possible answer to the following questions but the answer still has to include an explanation. (a) (2 points) Which of these plots illustrate a model with additive factor effects? Include an explanation. (b) (2 points) Which of these plots illustrate a model with interacting factor effects? Include an explanation. (c) (2 points) Which of these plots illustrate a model where factor A does not have any effect? Include an explanation. (d) (3 points) Which of these plots illustrate a model Where all main effects of factor A are equal to 0? Include an explanation