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Is the second equation the result of a valid operation on the first equation?

$\displaystyle \frac{x}{4} - \frac{4}{5} = 0$

$5 x - 16 = 0$

If so, what is the operation?

A. Multiply both sides by $16$
B. Subtract $5$ from both sides
C. Multiply both sides by $20$
D. Multiply both sides by $5$
E. Subtract $4$ from both sides
F. There is no valid operation that transforms the first equation into the second equation