If the area of the region \( \{(x,y): 1-2x \le y \le 4 - x^{2}, \ x \ge 0, \ y \ge 0\} \) is \( \frac{\alpha}{\beta} \), \( \alpha,\beta \in \mathbb{N}, \ \gcd(\alpha,\beta)=1 \), then the value of \( (\alpha + \beta) \) is:
\( 85 \)
\( 73 \)
\( 67 \)
\( 91 \)