SPLT (current price $55) has 1- year call options with an exercise price of $55 trading at $4.92. The stock can increase by 20% or decrease by 15% over the next year and the risk-free rate is 5%. Arbitrage profits are most likely:

a) possible by purchasing 100 calls and (short) selling 57 shares

b) possible by purchasing 57 shares and selling 100 cals c) not possible

c) not possible