97.下列何者為磷脂肌醇4,5-雙磷酸(phosphotidylinositol 4,5-bisphosphate)被磷酸肌醇3-激酶 (phosphoinositide 3-kinase, PI3K)作用後的直接產物? (A)肌醇三磷酸(inositol trisphosphate) (B)磷脂肌醇1,4,5三磷酸(phosphatidylinositol 1,4,5-triphosphate) (C)二酸甘油酯(diacylglycerol) (D)磷脂肌醇3,4,5三磷酸(phosphatidylinositol 3,4,5-triphosphate)