75% by mass means 75 grams of copper in 100 grams of one peso coin. Which of the following is NOT correct?

A.75 g Cu/ 100 g coin x 5.4 g coin = 4.og Cu g

B. 100 g coin/75 g Cux 5.4 g coin = 4.0 g Cu

C. 75 g copper/100 g coin x 5,4 g coin = 4.0 g copper

D. Either A or C 7

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