Let \( E \) denote the parabola \( y^{2}=8x \). Let \( P=( -2,4 ) \), and let \( Q \) and \( Q' \) be two distinct points on \( E \) such that the lines \( PQ \) and \( PQ' \) are tangents to \( E \). Let \( F \) be the focus of \( E \). Then which of the following statements is (are) TRUE?
