Solve the following pair of equations: $(a \neq 0, b \neq 0)$
$\frac{2}{a} + \frac{3}{b} = 1$
$\frac{1}{a} + \frac{1}{b} = 1$

• A
  $\left(2, \frac{1}{2}\right)$
• B
  $\left(\frac{1}{2}, -\frac{1}{2}\right)$
• C
  $\left(\frac{1}{2}, -1\right)$
• D
  $\left(-\frac{2}{5}, \frac{3}{5}\right)$