Let \( a,b \in \mathbb{C} \). Let \( \alpha,\beta \) be the roots of the equation \( x^2 + \alpha x + b = 0 \). If \( \beta - \alpha = \sqrt{11} \) and \( \beta^2 - \alpha^2 = 3i\sqrt{11} \), then \( (\beta^3 - \alpha^3)^2 \) is equal to:
\( 160 \)
\( 176 \)
\( 194 \)
\( 187 \)
