Statement I : The latusrectum is the shortest focal chord of the parabola ${\mathrm{y}}^2=4\mathrm{ax}$

Statement II : Length of the focal chord of the parabola ${\mathrm{y}}^2=4\mathrm{ax} \mathrm{is} \mathrm{a}{\left(\mathrm{t}+\frac{1}{\mathrm{t}}\right)}^2$