Phosphorylation of phosphatidylinositol yields __________

• A. Phosphatidylinositol 4, 5-biphosphate
• B. Phosphatidylinositol 3, 5-biphosphate
• C. Phosphatidylinositol 3, 4-biphosphate
• D. Phosphatidylinositol 5, 6-biphosphate