Two regression lines intersect at

Question

$\begin {array} {1 1} (A)\;( \sigma_x \sigma_y) & \quad (B)\;( \overline x, \overline y) \\ (C)\;( \overline x^2, \overline y^2) & \quad (D)\;( \sigma_x^2 \sigma_y^2) \end {array}$