$\sqrt{4 \sin ^{2} \dfrac{\pi}{24}}$ এর মান কোনটি ?

$\sqrt{2-\sqrt{2+\sqrt{3}}}$

$\sqrt{2+\sqrt{2+\sqrt{3}}}$

$\sqrt{2-\sqrt{2-\sqrt{3}}}$

$\sqrt{2+\sqrt{2-\sqrt{3}}}$