It is widely believed in the papermaking industry that unless mills run continuously,a firm cannot make money and waste, estimated at 30% of overall mill cost, resulting from changing products 'on the run' is inevitable while the machine is achieving 'on grade' performance.
Considering after the underline part, it begins with verb"is " so we should expect noun that is placed before it. Therefore A, B and D are out because it fell into absolutely wrong structure.
E out since it lacks
...
Considering after the underline part, it begins with verb"is " so we should expect noun that is placed before it. Therefore A, B and D are out because it fell into absolutely wrong structure.
E out since it lacks
...
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