Javier has a cell phone plan that allows him to use up to 444 gigabytes (GB) of data per month. Streaming videos is the only action he does on his phone that uses up this data. Each time he streams a video, the number of gigabytes of his phone's data plan decreases. Specifically, his cell phone company estimates that approximately 0.12 GB of data are used for every 30 minutes of video streaming. If Javier has spent m minutes this month streaming videos, which of the following best approximates the amount of data, d, he has remaining on his plan?

A. d = 4 - 0.12m
B. d = 4 + 0.12m
C. d = 4 -.004m
D. d = 4 - 0.004m