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Consider the all-units quantity discount schedule below. EOQ at that Price 3581 3849 Quantity Ordered 1-1999 2000-3999 4000-5999 6000-7999 8000 and over Price Per Unit $100 $90 $80 $70 $60 4181 4364 4815 Which of the following sets of order quantities is guaranteed to contain the optimal solution (i.e., best order quantity)? {4181, 6000, 8000} {3849, 4181} {3581, 3849, 4181, 4364, 4815} {1, 2000, 4000, 6000, 8000}