If frac 45 53 = frac 1 a + frac 1...

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If $$\frac{{45}}{{53}} = \frac{1}{{a + \frac{1}{{b + \frac{1}{{c - \frac{2}{5}}}}}}},$$ where a, b and c are positive integers, then what is the value of (4a - b + 3c)?

A. 6

B. 4

C. 5

D. 7

Answer: Option C

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