52. 突變形鏈球菌(S. mutans)可將蔗糖轉化為右旋聚糖(dextran),此過程需何種酶?(A)葡萄糖轉送酶(glucosyltransferase)(B)果糖轉送酶(fructosyltransferase)(C)己糖激酶(hexokinase)(D)聚合酶(polymerase)