Which statement describes Newton's third law as it applies to rocket propulsion?

• A. Thrust is produced by the chemical energy of fuel and has nothing to do with Newton's laws.
• B. For every action expelling mass rearward, there is an equal and opposite reaction forward thrust that propels the rocket.
• C. Newton's third law only applies to solids, not to rocket propulsion.
• D. The reaction force arises from gravity acting against exhaust.

Answer: (B)