Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Are you considering a long forward? Because then at t=3 the value of the forward is $50S_3-K$ and the bank loan $-30S_0e^.09$. To replicate A, the $-K$ and $30S_0e^.09$ need to cancel. Do you mean that we use bank deposits at t=0?
