Company S manufactures and sells the same instruments as company J. The wages of employees in company S and company J account for 40% of the production of instruments. Company S is seeking a competitive advantage over company J. Therefore, in order to promote this, S companies should lower their employees' salaries. Which of the following, if true, would most weaken the above discussion? ['Because they produce a small number of precision instruments, instrument manufacturers cannot get bulk discounts on raw materials.', "Decreased wages will reduce the quality of employees' work, and this reduction in quality will lead to a decline in sales.", "J company snatched 20% of S company's business last year.", 'The salary paid by D. S companies to its employees is, on average, 10% higher than that of J companies.']