Read the excerpt from David Foster Wallace’s Infinite Jest.

I have committed to crossing my legs I hope carefully, ankle on knee, hands together in the lap of my slacks. My fingers are mated into a mirrored series of what manifests, to me, as the letter X. The interview room’s other personnel include: the University’s Director of Composition, its varsity tennis coach, and Academy prorector Mr. A. deLint. C.T. is beside me; the others sit, stand and stand, respectively, at the periphery of my focus. The tennis coach jingles pocket-change.

Based on this excerpt, which detail is implicit?
More chairs are needed to make seating available for all attendees.
Hal is sitting in a chair with his ankle on his knee.
The Director of Composition is involved in the interview process.
The tennis coach has money in his front pocket.