The point is on the terminal side of an angle in standard position. Give the smallest angle measure in both degrees and radians.

A.(-1,1)
B.(-3,3)
C.(2,4)

$\displaystyle \begin{array}{l} a.\,\,\pi + \arctan \left( { - 1} \right) \\ b.\,\,\pi + \arctan \left( { - 1} \right) \\ c.\,\,\arctan \left( 2 \right) \\ \end{array}$