Who is Phillip Dick?

Choices:
A. not enough information
B. Their teacher.
C. Their neighbor.
D. Their mutual friend.
not enough information
William White sat across from me, fidgeting nervously with an empty packet of artificial sweetener while his coffee went cold, ignored on the table in front of him. He rolled the torn yellow paper up like a tight little spliff, then unrolled it, smoothed it out flat, and then rolled it again. I was midway through my third cup of coffee with no intention of stopping soon. I was tired and edgy, irritated at William for dragging me out at this time of night, and getting even more irritated at his refusal to get to the point. 'Did you know Philip K. Dick had a twin sister?' I stared at him blankly. 'Her name was Jane. She died shortly after their birth. They were six weeks premature,' he continued, his eyes drifting off to the window to his right. I wasn't sure if he was looking at something through it or staring at his own reflection in it. 'Dick never got over Jane's death; her ghost haunted him throughout his life, and the idea of a phantom twin pops up throughout his work. Some have even speculated that Dick's inability to make peace with the loss of his sister contributed to his drug abuse, and by extension also his death at the relatively young age of 53.' He unrolled the sweetener packet, laid it on the table, placed both index fingers together in its center, and then spread them outward, smoothing the paper flat. I reached out and slammed my own hand on top of the packet, preventing him from fiddling with it anymore. 'Sorry,' he said sheepishly. I let out a sigh. 'Not that this isn't fascinating, but did you seriously call me out to Denny's at 3 am for this?'