Give an Equation of the Line Containing the Points $( 2,1,1 ) \text { and } ( 4,3,2 )$

Essay

Give an equation of the line containing the points $( 2,1,1 ) \text { and } ( 4,3,2 )$ as vector parameterization.
A) $\vec { r } ( t ) = \langle 1 , - 2,2 \rangle + t \langle 1,3,2 \rangle$
B) $\vec { r } ( t ) = \langle 2,1,1 \rangle + t \langle 2,2,1 \rangle$
C) $\vec { r } ( t ) = \langle 1,3,2 \rangle + t \langle 1,2,2 \rangle$
D) $\vec { r } ( t ) = \langle 1,2,2 \rangle + t \langle 1,3,2 \rangle$