In an empty stack, the top pointer _____.

There have been viruses and Trojan horses triggered on April Fool's Day and Friday the 13th

Indicate whether the statement is true or false

Match the following PowerPoint picture tools with their descriptions:

I. sharpening II. tone III. recolor IV. contrast V. brightness A. sepia is one example B. the difference between the darkest and lightest areas of an image C. temperature of a color measured in kelvin units D. making boundaries of an image content more pronounced E. lightness and darkness of an image