On October 31st2014, the premia on the call and put options for Apple stock with strike prices of $100 and $120 and expiration dates in December 2014 and January 2015 are given in the following table. At that time, the underlying Apple stock was traded at $108 per share. In the question above, why are the options expiring in January 2015 selling for higher prices than those expiring in December 2014