Describe Geometrically the Effect of the Transformation T $A = \left[ \begin{array} { l l l } 0 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 1 \end{array} \right]$

Multiple Choice

Describe geometrically the effect of the transformation T.
-Let $A = \left[ \begin{array} { l l l } 0 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 1 \end{array} \right]$
Define a transformation $\mathrm { T }$ by $\mathrm { T } ( \mathbf { x } ) = \mathrm { Ax }$ .

A) Projection onto the $x _ { 2 } \times 3$ -plane
B) Projection onto the $x _ { 2 }$ -axis
C) Horizontal shear
D) Vertical shear