Easy Recline firm makes two types of reclining chairs, Deluxe and Luxury. The contribution margin per chair for the Luxury model is $40 and for the Deluxe model it is $25. November, Easy Recline sold 2 Deluxe chairs for every Luxury chair. In December, it sold 3 Deluxe chairs for every Luxury chair. The total number of chairs sold during November and December were the same. The total contribution margin for Easy Recline for the month of December O A. Was strictly less than that for November OB. Was greater than the total $ Gross margin for November C. Was the same as that for November OD. Was strictly greater than that for November O E. Was smaller than the total $ Gross margin for November