A tangent to the curve y = 1 – x2 is drawn so that the abscissa x0 of the point of tangency belongs to the interval [0, 1]. The tangent at x0, meets the x-axis and y-axis at A and B respectively. The minimum area of the ΔOAB where O is the origin is
1
\(\frac{4}{9}\)
2
\(\frac{4\sqrt3}{9}\)
3
\(\frac{1}{4}\)
4
none of these