Find the value of $\lambda$ such that the vectors $\overrightarrow{a}=2\hat i+\lambda\hat j+\hat k$ and $\overrightarrow{b}=\hat i+2\hat j+3\hat k$ are orthogonal

Question

$$(A)\;0\quad(B)\;1\quad(C)\;\frac{3}{2}\quad(D)\;\frac{-5}{2}$$