Need help with this finance hw. Please show work in excel

The spot price of some asset that pays no dividends and costs nothing to own is $100. The risk-free rate of interest is 3% per year. The one-year futures price of this asset is $103. European call and put options on this underlying asset are also available with a strike price of $103 and an expiration date of one year. You decide to buy a call on the underlying asset and sell a put (again, both options have X = $103 and both expire in one year). What is the net cost to you of buying the call and selling the put?