What is the product of all values of $x$ that satisfies the equation: $\sqrt{5x}+1=\sqrt{7x-3}?$

What is the product of all values of $x$ that satisfies the equation: $\sqrt{5x}+1=\sqrt{7x-3}?$

A. 9
B. 11
C. 49
D. 99
E. None of the above

Answer: E

Source: e-GMAT

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