The fictional currency cubit has a negative interest rate and as a result a cubit$-$denominated risk$-$free unit discount bond maturing in one year is worth $2$ cubits today. On the other hand, the one$-$year risk$-$free interest rate on a dollar is zero. The current spot price of one cubit is $$100.$ There is no forward $($or futures$)$ market in cubits, but you can trade one$-$year European calls and puts on cubits with$$100$ strike. If the put premium is $$40,$ what is the call premium? How would you create an arbitrage if you found the quoted call premium is $$10$ higher than your theoretical answer? Create a arbitrage table with trade,time zero and time T$.$ Buy the call or sell the call etc.