Which of the following aspect ratios would BEST meet this requirement?

A user creates a file in presentation software to be shown on a widescreen display. The user would like to adjust the aspect ratio of the slides in the presentation software so they display without extra black areas on the top, bottom, left, or right of the slides.

Which of the following aspect ratios would BEST meet this requirement?
A . 4:3
B . 5:4
C . 16:9
D . 256:135

Answer: C