琥珀酸脱氢酶的辅酶是(   )\n \n \n \n \n \n \n

\n \n \n \n A.\n 磷酸吡哆醛\n

\n \n

\n \n \n \n B.\n FAD\n

\n \n

\n \n \n \n C.\n 生物素\n

\n \n

\n \n \n \n D.\n