9. A and B are sawing some logs at the same time, with each log having the same length and thickness. A cuts each log into 3 pieces, while B cuts each log into 2 pieces. After the same period of time, A has 24 pieces of wood, and B has 28 pieces of wood. Therefore, $\qquad$ (fill in "A" or "B") takes less time to saw one log.


Answer: A
Analysis: A: $24 \div 3=8$ (pieces), each piece requires 3-1=2 (cuts), in total: $8 \times 2=16$ (cuts); B: $28 \div 2=14$ (pieces), each piece requires $2-1=1$ (cut), in total: $14 \times 1=14$ (cuts). A cutting 16 times and B cutting 14 times take the same amount of time, indicating that A cuts faster.