If α and β are the zeros of the polynomial \( f(x) = kx^{2} + 4x + 4 \) such that α\( ^{2} + \) β\( ^{2} = 24 \), then find the positive value of k.
\( \frac{4}{3} \)
\( \frac{1}{3} \)
\( \frac{3}{4} \)
\( \frac{2}{3} \)
D. \( \frac{2}{3} \)