John and Tim are competitors and they both started their shops at the same time. They both sell kitchen utensils. John's fixed costs are $45000 while that of Tim are $56000. Their contribution margins per unit are $10 and $14 respectively. Which one of them breaks-even earlier in terms of the units sold? Tim, as he sells 500 more units Tim, as he sells 500 less units John, as he sells 500 less units They both break even at the same time John, as he sells 500 more units