Which is the best speculation here? Or what would you offer as a better guess?

Question

FINDINGS

Kex IV (31-40): -A6D2, -A6E3,+D2D3, +D2F2,+D3F3, +D6E6, +E1E2, +E2F1, +E3E4, +E5E6

SPECULATIONS

"Findings repeat"
"+X9X9"
"-X9X9"
"-X9Y8"
"+X9Y8"
"A's, B's, and C's are alike, i.e., +A9A8, +A9B9, +A9C9, +B9B8, +B9C9, +C9C8"
"Jack's Hypothesis: -A9D9" (ref "Kex I")
"Hayes' Guess: +B2C2"
"I will not speculate" (ref "Kex I")

Best Answer will be selected on strict criteria.

Answer 1

Too early to speculate.

Jack's hypothesis is not current, as depicted.

Answer 2

"I will not speculate."