女性，68岁，卵巢癌术后3个月，门诊化疗，厌食伴呕吐，1周来自觉乏力腹胀，门诊查体示双膝腱反射减弱，心电图示T波低平，Q-T间期延长，血清钾2.7mmol/L，氯86mmol/L，动脉血气：pH7.45，PaO86mmHg，PaCO₂48mmHg，HCO₃^-32mmol/L。

为提升血钾，最简单、安全的补钾方案是（）。

A.氯化钾加入10%葡萄糖溶液中经周围静脉输注

B.氯化钾加入5%葡萄糖盐水中经周围静脉输注

C.口服补钾片药

D.口服或管饲20%枸橼酸钾

E.氯化钾直接静脉推注

George Mote owns stock in IBM currently valued at $112 per share. Mote writes a call option on IBM with an exercise price of $120. The call option is sold for $1.80. At expiration, the price of IBM is $115. What is Mote’s profit (or loss) from his covered call strategy Mote:

A．

B．

C．