4. Use put-call parity to derive the fair price of an European put option P(t, S, E). Check the boundary condition lim P(t, S, E) = Ee-rt S+0+ and explain its financial meaning. 4. Use put-call parity to derive the fair price of an European put option P(t, S, E). Check the boundary condition lim P(t, S, E) = Ee-rt S+0+ and explain its financial meaning