A stock is currently trading at a price of 22. You observe the following prices for European call options on the stock (the strikes are in parentheses): C(20) = 3.25, C(22) = 1.95, and C(24) = 0.40. You can conclude from this that
(a) The 20-strike call is overvalued.
(b) The 24-strike call is undervalued.
(c) The prices of the calls are inconsistent with no-arbitrage.
(d) The stock is mispriced.