Archer Company is a wholesaler of custom-built air-conditioning units for commercial buildings. It gathered the following monthly data relating to units shipped and total shipping expense: Month Units Shipped Total Shipping Expense January 4 $ 1,800 February 7 $ 2,300 March 5 $ 1,700 April 6 $ 2,000 May 8 $ 2,300 June 9 $ 3,400 July 1 $ 1,200 4. What factors, other than the number of units shipped, are likely to affect the company’s shipping expense? (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer. Any boxes left with a question mark will be automatically graded as incorrect.) check all that apply Weight of the units shipped Distance traveled Sales commissions Trade discounts given to repeat customers Express shipping to meet a deadline