In a factory there are three types of Machines M1 , M2 and M3 which produces 25%

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In a factory there are three types of Machines M1 , M2 and M3 which produces 25%, 35% and 40% of the total products respectively. M1, M2 and M3 produces 2% , 4% and 5% defective products, respectively. What is the percentage of non-defective products?

A. 0.89
B. 0.971
C. 0.961
D. 0.861

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