Read the following article and answer the question by choosing from the options.

It was the right choice , as I ' m still really weak ( although I feel better ! ) and probably would n't have made it through the shift . I did get creative in the last hour or so and made some new addy labels for my swaps . I figured out I can do most of the graphic work on my phone , which is high speed , then get on John 's slow computer to print stuff out ...

Why did they use their phone for the graphic work ?
Choose your answer from: A. They were too lazy to use a computer for work .. B. None of the above choices .. C. They did n't have access to any computers .. D. Their phone was easier and quicker to use .....A:
D.