可以把现在的期权费54（1+2%）^0.5 与X=48比较吗？

NO.PZ2023040401000079 问题如下 A Europeput option with six months remaining to maturity hexercise pri(X) of US48. Suppose the unrlying stohno aitioncash flows, the risk-free rate is 2%, the current unrlying pri(St) is US54. If the current put option priis US4.6, Whiof the following calculations of the exercise value anthe time value is correct? A.The exercise value of the put option is 0;The time value of the put option is US4.6. B.The exercise value of the put option is 4.6; The time value of the put option is US0. C.The exercise value of the put option is 0；The time value of the put option cannot calculate Put option exercise value = M(0, X(1 + r)−(T−t) − St)= M(0, 48(1 + 2%)−0.5 − 54) = 0Put option time value = ​pt – M(0, X(1 + r)−(T−t)− St) = 4.6-0 = US4.6. time value为什么等于期权费啊，value的计算不算期权费，profit or loss是在value的基础上算上期权费。