題目關於胰島素對醣類代謝的調節,下列敘述何者正確?A.降低肝臟中肝醣合成酶(glycogen synthase)活性B.增加肝臟中葡萄糖激酶(glucokinase)活性C.降低肝臟與肌肉中丙酮酸去氫酶(pyruvate dehydrogenase complex)活性D.增加肝臟與肌肉中肝醣磷酸化酶(glycogen phosphorylase)活性官方答案B