Find the value of $\sin(105^{\large\circ})$

Question

$(a)\;\large\frac{\sqrt 3+1}{2}\qquad$$(b)\;\large\frac{\sqrt 3+1}{2\sqrt 2}$$\qquad(c)\;\large\frac{\sqrt 3-1}{\sqrt 2}$$\qquad(d)\;None\;of\;these$