Question 11 2 pts Laplace and Co. makes and sells a single product line. Summarized results for the past two months reveal the followings: Nov Dec Sales (units of product) 800 1300 Sales ($) 4800 7800 Materials ($) 800 1300 Labour ($) 1300 2050 Overheads ($) 1900 2900 Total costs ($) 4000 6250 Operating profits ($) 800 1550 There were no price changes of any description during these two months. Calculate the contribution per unit for the company. O $4.50 O $1.50 O $3.50 $2.50