Intel Corporation (INTC) is currently trading at $60 per share, and is expected to either appreciate to $75 per share or depreciate to $50 per share in one year's time. You are considering purchasing a put option on the stock with a strike price of $60 that matures in exactly one year's time. How many units of the underlying stock should you buy or short to replicate a single put option on INTC stock? Assume that the risk-free rate is 5% per annum and that each option covers a single unit of stock.