So B. It

From the text:

Roy came in to say good night—I heard him but I was too far away by then to answer. I had followed the sound of Elliot’s voice into the dream that lay waiting for me on the other side. It was about Thurman Hill’s watch. He came into my room holding one hand out to me, the cold, white fingers closed tightly around something I couldn’t see. His sleeve pulled up as he reached out, and I saw his bony wrist with the gold watch. The face of the watch was blue, but there were no numbers on it, just four letters: S-O-O-F—one letter each at twelve o'clock, three, six, and nine.

“Show me what’s in your hand,” I said.

He smiled and shook his head.

"You'll never know," he whispered back.