Quantitative Aptitude Simplification Fractions

If a = \(\frac{7}{9}\) and b = \(\frac{5}{13}\), then the value of \(\left(a^{-1}+b^{-1}\right) \times(a+b)^{-1}\) is:

1
\(\frac{117}{35}\)
2
\(\frac{35}{117}\)
3
\(\frac{35}{136}\)
4
More than one of the above
5
None of the above 

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