Which of the following is a true statement?

$\frac{12}{16}>\frac{15}{20}$

$\frac{4}{9}>\frac{3}{7}$

$\frac{5}{12}<mfrac\; id="EditorElement\_3971696"><mrow\; id="EditorElement\_3971689"><mn\; id="EditorElement\_3971686">3</mn></mrow><mrow\; id="EditorElement\_3971695"><mn\; id="EditorElement\_3971692">8</mn></mrow></mfrac>$

$\frac{2}{7}<mfrac\; id="EditorElement\_3971726"><mrow\; id="EditorElement\_3971719"><mn\; id="EditorElement\_3971716">1</mn></mrow><mrow\; id="EditorElement\_3971725"><mn\; id="EditorElement\_3971722">5</mn></mrow></mfrac>$