Choose the Letter That Best Describes the Output $\mathrm { x } = 1$

Choose the letter that best describes the output. Assume that the code is applied to a computer monitor with a resolution of 1280 by 1024.
-For $\mathrm { x } = 1$ to 1280
Plot pixel $( x , 512 )$
ClearScreen
Next $x$

A) A pixel traveling horizontally from the middle of the right side to the middle of the left side
B) A pixel traveling horizontally from the middle of the left side to the middle of the right side
C) A pixel traveling vertically from the middle of the top to the middle of the bottom
D) A pixel traveling vertically from the middle of the bottom to the middle of the top
E) None of these