4. High operating leverage means (choose one): (5.5) (a) The company has relatively low fixed costs. (b) The company has relatively high fixed costs. (c) The company will have to sell more units than a comparable company with low operating leverage to break even. (d) The company will have to sell fewer units than a comparable company with low operating leverage to break even. (e) Both (b) and (c) are correct. (f) Both (a) and (d) are correct