Question: Identify the factors in this study, and the levels of each. Need Assignment Help? A. potting mix (4 levels) and light source (2 levels) B. potting mix (3 levels) and light source (2 levels) C. seedling weight and height (1 level each) D. potting mix (4 levels) and light source (1 level) E. soil and sun (1 level each) Enter the letter only.